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b/java-learning/bin/jp/co/jid/stringSample/stringSample.class index b913694..ec6a0ba 100644 --- a/java-learning/bin/jp/co/jid/stringSample/stringSample.class +++ b/java-learning/bin/jp/co/jid/stringSample/stringSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class new file mode 100644 index 0000000..ead71b8 --- /dev/null +++ b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class Binary files differ diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample1.java b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java new file mode 100644 index 0000000..efb748b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample1 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray[2]); + intArray[2] = 7; + System.out.println(intArray[2]); + } + +} diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class new file mode 100644 index 0000000..be31229 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class new file mode 100644 index 0000000..4aaa734 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class new file mode 100644 index 0000000..c81ead4 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample4.class 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ArraySample1 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray[2]); + intArray[2] = 7; + System.out.println(intArray[2]); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample2.java b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java new file mode 100644 index 0000000..c9c24b3 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java @@ -0,0 +1,10 @@ +package jp.co.jid.arraySample; + +public class ArraySample2 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray.length); + } + +} diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class new file mode 100644 index 0000000..be31229 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class Binary files differ diff --git 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b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java new file mode 100644 index 0000000..c9c24b3 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java @@ -0,0 +1,10 @@ +package jp.co.jid.arraySample; + +public class ArraySample2 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray.length); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample3.java b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java new file mode 100644 index 0000000..02c3683 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample3 { + + public static void main(String[] args) { + int array[][] = {{11, 12, 13}, {21, 22, 23}}; + for (int[] row : array) { + for (int element : row) { + System.out.print(element + "\t"); + } + System.out.print("\n"); + } + } + +} diff --git 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b/java-learning/bin/jp/co/jid/stringSample/stringSample.class index b913694..ec6a0ba 100644 --- a/java-learning/bin/jp/co/jid/stringSample/stringSample.class +++ b/java-learning/bin/jp/co/jid/stringSample/stringSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class new file mode 100644 index 0000000..ead71b8 --- /dev/null +++ b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class Binary files differ diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample1.java b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java new file mode 100644 index 0000000..efb748b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample1 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray[2]); + intArray[2] = 7; + System.out.println(intArray[2]); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample2.java b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java new file mode 100644 index 0000000..c9c24b3 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java @@ -0,0 +1,10 @@ +package jp.co.jid.arraySample; + +public class ArraySample2 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray.length); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample3.java b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java new file mode 100644 index 0000000..02c3683 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample3 { + + public static void main(String[] args) { + int array[][] = {{11, 12, 13}, {21, 22, 23}}; + for (int[] row : array) { + for (int element : row) { + System.out.print(element + "\t"); + } + System.out.print("\n"); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample4.java b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java new file mode 100644 index 0000000..7a18a4b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample4 { + + public static void main(String[] args) { + int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for (int element : array) { + System.out.println(element); + } + } + +} diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class new file mode 100644 index 0000000..be31229 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class new file mode 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b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class new file mode 100644 index 0000000..ead71b8 --- /dev/null +++ b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class Binary files differ diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample1.java b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java new file mode 100644 index 0000000..efb748b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample1 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray[2]); + intArray[2] = 7; + System.out.println(intArray[2]); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample2.java b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java new file mode 100644 index 0000000..c9c24b3 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java @@ -0,0 +1,10 @@ +package jp.co.jid.arraySample; + +public class ArraySample2 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray.length); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample3.java b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java new file mode 100644 index 0000000..02c3683 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample3 { + + public static void main(String[] args) { + int array[][] = {{11, 12, 13}, {21, 22, 23}}; + for (int[] row : array) { + for (int element : row) { + System.out.print(element + "\t"); + } + System.out.print("\n"); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample4.java b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java new file mode 100644 index 0000000..7a18a4b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample4 { + + public static void main(String[] args) { + int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for (int element : array) { + System.out.println(element); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample5.java b/java-learning/src/jp/co/jid/arraySample/ArraySample5.java new file mode 100644 index 0000000..3d980b0 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample5.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample5 { + + public static void main(String[] args) { + int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for (int index = 0; index < array.length; index++) { + array[index] *= 2; + } + for (int element : array) { + System.out.println(element); + } + } + +} diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class new file mode 100644 index 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b/java-learning/bin/jp/co/jid/stringSample/stringSample.class index b913694..ec6a0ba 100644 --- a/java-learning/bin/jp/co/jid/stringSample/stringSample.class +++ b/java-learning/bin/jp/co/jid/stringSample/stringSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class new file mode 100644 index 0000000..ead71b8 --- /dev/null +++ b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class Binary files differ diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample1.java b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java new file mode 100644 index 0000000..efb748b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample1 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray[2]); + intArray[2] = 7; + System.out.println(intArray[2]); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample2.java b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java new file mode 100644 index 0000000..c9c24b3 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java @@ -0,0 +1,10 @@ +package jp.co.jid.arraySample; + +public class ArraySample2 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray.length); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample3.java b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java new file mode 100644 index 0000000..02c3683 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample3 { + + public static void main(String[] args) { + int array[][] = {{11, 12, 13}, {21, 22, 23}}; + for (int[] row : array) { + for (int element : row) { + System.out.print(element + "\t"); + } + System.out.print("\n"); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample4.java b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java new file mode 100644 index 0000000..7a18a4b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample4 { + + public static void main(String[] args) { + int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for (int element : array) { + System.out.println(element); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample5.java b/java-learning/src/jp/co/jid/arraySample/ArraySample5.java new file mode 100644 index 0000000..3d980b0 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample5.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample5 { + + public static void main(String[] args) { + int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for (int index = 0; index < array.length; index++) { + array[index] *= 2; + } + for (int element : array) { + System.out.println(element); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample6.java b/java-learning/src/jp/co/jid/arraySample/ArraySample6.java new file mode 100644 index 0000000..3f2da81 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample6.java @@ -0,0 +1,14 @@ +package jp.co.jid.arraySample; + +public class ArraySample6 { + + public static void main(String[] args) { + int array[][] = {{11, 12, 13}, {21, 22, 23}}; + for (int i = 0; i < 2; i++) { + for (int j = 0; j < 3; j++) { + System.out.println(array[i][j]); + } + } + } + +} diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class new file mode 100644 index 0000000..be31229 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class new file mode 100644 index 0000000..4aaa734 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class new file mode 100644 index 0000000..c81ead4 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample4.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample4.class new file mode 100644 index 0000000..e3a5d2f --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample4.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample5.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample5.class new file mode 100644 index 0000000..6f8c4e6 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample5.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample6.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample6.class new file mode 100644 index 0000000..bdedfd0 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample6.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/classAndMethod/Calculation.class b/java-learning/bin/jp/co/jid/classAndMethod/Calculation.class index e8c458e..f7c5ffc 100644 --- a/java-learning/bin/jp/co/jid/classAndMethod/Calculation.class +++ b/java-learning/bin/jp/co/jid/classAndMethod/Calculation.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class b/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class index b682f8f..4287ec1 100644 --- a/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class +++ b/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/exceptionSample/ExceptionSample.class b/java-learning/bin/jp/co/jid/exceptionSample/ExceptionSample.class new file mode 100644 index 0000000..6069b95 --- /dev/null +++ b/java-learning/bin/jp/co/jid/exceptionSample/ExceptionSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/ExtendsSample.class b/java-learning/bin/jp/co/jid/extendsSample/ExtendsSample.class new file mode 100644 index 0000000..971dbb9 --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/ExtendsSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/Food.class b/java-learning/bin/jp/co/jid/extendsSample/Food.class new file mode 100644 index 0000000..7cc9c1a --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/Food.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/Human.class b/java-learning/bin/jp/co/jid/extendsSample/Human.class new file mode 100644 index 0000000..a2a1c95 --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/Human.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/Programmer.class b/java-learning/bin/jp/co/jid/extendsSample/Programmer.class new file mode 100644 index 0000000..f91d072 --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/Programmer.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/Programmer2.class b/java-learning/bin/jp/co/jid/extendsSample/Programmer2.class new file mode 100644 index 0000000..f43b997 --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/Programmer2.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/Calculation.class b/java-learning/bin/jp/co/jid/interfaceSample/Calculation.class new file mode 100644 index 0000000..3f2f543 --- /dev/null +++ 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b/java-learning/bin/jp/co/jid/interfaceSample/Plus.class new file mode 100644 index 0000000..fc4e66b --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/Plus.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class b/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class new file mode 100644 index 0000000..f78b826 --- /dev/null +++ b/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class b/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class new file mode 100644 index 0000000..12c1935 --- /dev/null +++ b/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/stringSample/stringSample.class b/java-learning/bin/jp/co/jid/stringSample/stringSample.class index b913694..ec6a0ba 100644 --- a/java-learning/bin/jp/co/jid/stringSample/stringSample.class +++ b/java-learning/bin/jp/co/jid/stringSample/stringSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class new file mode 100644 index 0000000..ead71b8 --- /dev/null +++ b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class Binary files differ diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample1.java b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java new file mode 100644 index 0000000..efb748b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample1 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray[2]); + intArray[2] = 7; + System.out.println(intArray[2]); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample2.java b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java new file mode 100644 index 0000000..c9c24b3 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java @@ -0,0 +1,10 @@ +package jp.co.jid.arraySample; + +public class ArraySample2 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray.length); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample3.java b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java new file mode 100644 index 0000000..02c3683 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample3 { + + public static void main(String[] args) { + int array[][] = {{11, 12, 13}, {21, 22, 23}}; + for (int[] row : array) { + for (int element : row) { + System.out.print(element + "\t"); + } + System.out.print("\n"); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample4.java b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java new file mode 100644 index 0000000..7a18a4b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample4 { + + public static void main(String[] args) { + int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for (int element : array) { + System.out.println(element); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample5.java b/java-learning/src/jp/co/jid/arraySample/ArraySample5.java new file mode 100644 index 0000000..3d980b0 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample5.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample5 { + + public static void main(String[] args) { + int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for (int index = 0; index < array.length; index++) { + array[index] *= 2; + } + for (int element : array) { + System.out.println(element); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample6.java b/java-learning/src/jp/co/jid/arraySample/ArraySample6.java new file mode 100644 index 0000000..3f2da81 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample6.java @@ -0,0 +1,14 @@ +package jp.co.jid.arraySample; + +public class ArraySample6 { + + public static void main(String[] args) { + int array[][] = {{11, 12, 13}, {21, 22, 23}}; + for (int i = 0; i < 2; i++) { + for (int j = 0; j < 3; j++) { + System.out.println(array[i][j]); + } + } + } + +} diff --git a/java-learning/src/jp/co/jid/classAndMethod/Calculation.java b/java-learning/src/jp/co/jid/classAndMethod/Calculation.java index 32964dc..923e482 100644 --- a/java-learning/src/jp/co/jid/classAndMethod/Calculation.java +++ b/java-learning/src/jp/co/jid/classAndMethod/Calculation.java @@ -11,6 +11,15 @@ return num1 + num2; } + public int plus(int... nums) { + System.out.println("ๅฏๅค‰้•ทๅผ•ๆ•ฐใฎๅˆ่จˆๅ€คใงใ™"); + int sum = 0; + for (int num : nums) { + sum += num; + } + return sum; + } + public int multiple(int num1, int num2) { int res = 0; for (int i = 0; i < num2; i++) { diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class new file mode 100644 index 0000000..be31229 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class new file mode 100644 index 0000000..4aaa734 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class new file mode 100644 index 0000000..c81ead4 --- /dev/null +++ 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b/java-learning/bin/jp/co/jid/classAndMethod/Calculation.class index e8c458e..f7c5ffc 100644 --- a/java-learning/bin/jp/co/jid/classAndMethod/Calculation.class +++ b/java-learning/bin/jp/co/jid/classAndMethod/Calculation.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class b/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class index b682f8f..4287ec1 100644 --- a/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class +++ b/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/exceptionSample/ExceptionSample.class b/java-learning/bin/jp/co/jid/exceptionSample/ExceptionSample.class new file mode 100644 index 0000000..6069b95 --- /dev/null +++ b/java-learning/bin/jp/co/jid/exceptionSample/ExceptionSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/ExtendsSample.class 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a/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class b/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class new file mode 100644 index 0000000..12c1935 --- /dev/null +++ b/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/stringSample/stringSample.class b/java-learning/bin/jp/co/jid/stringSample/stringSample.class index b913694..ec6a0ba 100644 --- a/java-learning/bin/jp/co/jid/stringSample/stringSample.class +++ b/java-learning/bin/jp/co/jid/stringSample/stringSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class new file mode 100644 index 0000000..ead71b8 --- /dev/null +++ b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class Binary files differ diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample1.java b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java new file mode 100644 index 0000000..efb748b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample1 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray[2]); + intArray[2] = 7; + System.out.println(intArray[2]); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample2.java b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java new file mode 100644 index 0000000..c9c24b3 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java @@ -0,0 +1,10 @@ +package jp.co.jid.arraySample; + +public class ArraySample2 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray.length); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample3.java b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java new file mode 100644 index 0000000..02c3683 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample3 { + + public static void main(String[] args) { + int array[][] = {{11, 12, 13}, {21, 22, 23}}; + for (int[] row : array) { + for (int element : row) { + System.out.print(element + "\t"); + } + System.out.print("\n"); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample4.java b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java new file mode 100644 index 0000000..7a18a4b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample4 { + + public static void main(String[] args) { + int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for (int element : array) { + System.out.println(element); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample5.java b/java-learning/src/jp/co/jid/arraySample/ArraySample5.java new file mode 100644 index 0000000..3d980b0 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample5.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample5 { + + public static void main(String[] args) { + int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for (int index = 0; index < array.length; index++) { + array[index] *= 2; + } + for (int element : array) { + System.out.println(element); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample6.java b/java-learning/src/jp/co/jid/arraySample/ArraySample6.java new file mode 100644 index 0000000..3f2da81 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample6.java @@ -0,0 +1,14 @@ +package jp.co.jid.arraySample; + +public class ArraySample6 { + + public static void main(String[] args) { + int array[][] = {{11, 12, 13}, {21, 22, 23}}; + for (int i = 0; i < 2; i++) { + for (int j = 0; j < 3; j++) { + System.out.println(array[i][j]); + } + } + } + +} diff --git a/java-learning/src/jp/co/jid/classAndMethod/Calculation.java b/java-learning/src/jp/co/jid/classAndMethod/Calculation.java index 32964dc..923e482 100644 --- a/java-learning/src/jp/co/jid/classAndMethod/Calculation.java +++ b/java-learning/src/jp/co/jid/classAndMethod/Calculation.java @@ -11,6 +11,15 @@ return num1 + num2; } + public int plus(int... nums) { + System.out.println("ๅฏๅค‰้•ทๅผ•ๆ•ฐใฎๅˆ่จˆๅ€คใงใ™"); + int sum = 0; + for (int num : nums) { + sum += num; + } + return sum; + } + public int multiple(int num1, int num2) { int res = 0; for (int i = 0; i < num2; i++) { diff --git a/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java b/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java index ba5f4fb..7e386ee 100644 --- a/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java +++ b/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java @@ -3,15 +3,18 @@ public class ClassAndMethod { public static void main(String[] args) { -// Human human1 = new Human(); -// human1.printName(); -// Human human2 = new Human("็”ฐไธญ็ด‹ๆฌก้ƒŽ"); -// human2.printName(); + Human human1 = new Human(); + human1.printName(); + Human human2 = new Human("็”ฐไธญ็ด‹ๆฌก้ƒŽ"); + human2.printName(); Calculation calc = new Calculation(); System.out.println(calc.plus(2, 3)); -// System.out.println(calc.plus(2.0, 3.0)); -// System.out.println(calc.multiple(2, 3)); + System.out.println(calc.plus(2.0, 3.0)); + System.out.println(calc.multiple(2, 3)); + System.out.println(calc.plus(1, 2, 3)); + System.out.println(calc.plus(1, 2, 3, 4, 5)); + System.out.println(calc.plus(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)); } } diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class new file mode 100644 index 0000000..be31229 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class new file mode 100644 index 0000000..4aaa734 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class new file mode 100644 index 0000000..c81ead4 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample4.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample4.class new file mode 100644 index 0000000..e3a5d2f --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample4.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample5.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample5.class new file mode 100644 index 0000000..6f8c4e6 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample5.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample6.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample6.class new file mode 100644 index 0000000..bdedfd0 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample6.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/classAndMethod/Calculation.class b/java-learning/bin/jp/co/jid/classAndMethod/Calculation.class index e8c458e..f7c5ffc 100644 --- a/java-learning/bin/jp/co/jid/classAndMethod/Calculation.class +++ b/java-learning/bin/jp/co/jid/classAndMethod/Calculation.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class b/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class index b682f8f..4287ec1 100644 --- a/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class +++ b/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/exceptionSample/ExceptionSample.class b/java-learning/bin/jp/co/jid/exceptionSample/ExceptionSample.class new file mode 100644 index 0000000..6069b95 --- /dev/null +++ b/java-learning/bin/jp/co/jid/exceptionSample/ExceptionSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/ExtendsSample.class b/java-learning/bin/jp/co/jid/extendsSample/ExtendsSample.class new file mode 100644 index 0000000..971dbb9 --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/ExtendsSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/Food.class b/java-learning/bin/jp/co/jid/extendsSample/Food.class new file mode 100644 index 0000000..7cc9c1a --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/Food.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/Human.class b/java-learning/bin/jp/co/jid/extendsSample/Human.class new file mode 100644 index 0000000..a2a1c95 --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/Human.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/Programmer.class b/java-learning/bin/jp/co/jid/extendsSample/Programmer.class new file mode 100644 index 0000000..f91d072 --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/Programmer.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/Programmer2.class b/java-learning/bin/jp/co/jid/extendsSample/Programmer2.class new file mode 100644 index 0000000..f43b997 --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/Programmer2.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/Calculation.class b/java-learning/bin/jp/co/jid/interfaceSample/Calculation.class new file mode 100644 index 0000000..3f2f543 --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/Calculation.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/InterfaceSample.class b/java-learning/bin/jp/co/jid/interfaceSample/InterfaceSample.class new file mode 100644 index 0000000..82a05e3 --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/InterfaceSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/MathUtil.class b/java-learning/bin/jp/co/jid/interfaceSample/MathUtil.class new file mode 100644 index 0000000..833d740 --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/MathUtil.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/Minus.class b/java-learning/bin/jp/co/jid/interfaceSample/Minus.class new file mode 100644 index 0000000..119f3b8 --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/Minus.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/Plus.class b/java-learning/bin/jp/co/jid/interfaceSample/Plus.class new file mode 100644 index 0000000..fc4e66b --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/Plus.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class b/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class new file mode 100644 index 0000000..f78b826 --- /dev/null +++ b/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class b/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class new file mode 100644 index 0000000..12c1935 --- /dev/null +++ b/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/stringSample/stringSample.class b/java-learning/bin/jp/co/jid/stringSample/stringSample.class index b913694..ec6a0ba 100644 --- a/java-learning/bin/jp/co/jid/stringSample/stringSample.class +++ b/java-learning/bin/jp/co/jid/stringSample/stringSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class new file mode 100644 index 0000000..ead71b8 --- /dev/null +++ b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class Binary files differ diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample1.java b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java new file mode 100644 index 0000000..efb748b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample1 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray[2]); + intArray[2] = 7; + System.out.println(intArray[2]); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample2.java b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java new file mode 100644 index 0000000..c9c24b3 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java @@ -0,0 +1,10 @@ +package jp.co.jid.arraySample; + +public class ArraySample2 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray.length); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample3.java b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java new file mode 100644 index 0000000..02c3683 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample3 { + + public static void main(String[] args) { + int array[][] = {{11, 12, 13}, {21, 22, 23}}; + for (int[] row : array) { + for (int element : row) { + System.out.print(element + "\t"); + } + System.out.print("\n"); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample4.java b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java new file mode 100644 index 0000000..7a18a4b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample4 { + + public static void main(String[] args) { + int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for (int element : array) { + System.out.println(element); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample5.java b/java-learning/src/jp/co/jid/arraySample/ArraySample5.java new file mode 100644 index 0000000..3d980b0 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample5.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample5 { + + public static void main(String[] args) { + int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for (int index = 0; index < array.length; index++) { + array[index] *= 2; + } + for (int element : array) { + System.out.println(element); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample6.java b/java-learning/src/jp/co/jid/arraySample/ArraySample6.java new file mode 100644 index 0000000..3f2da81 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample6.java @@ -0,0 +1,14 @@ +package jp.co.jid.arraySample; + +public class ArraySample6 { + + public static void main(String[] args) { + int array[][] = {{11, 12, 13}, {21, 22, 23}}; + for (int i = 0; i < 2; i++) { + for (int j = 0; j < 3; j++) { + System.out.println(array[i][j]); + } + } + } + +} diff --git a/java-learning/src/jp/co/jid/classAndMethod/Calculation.java b/java-learning/src/jp/co/jid/classAndMethod/Calculation.java index 32964dc..923e482 100644 --- a/java-learning/src/jp/co/jid/classAndMethod/Calculation.java +++ b/java-learning/src/jp/co/jid/classAndMethod/Calculation.java @@ -11,6 +11,15 @@ return num1 + num2; } + public int plus(int... nums) { + System.out.println("ๅฏๅค‰้•ทๅผ•ๆ•ฐใฎๅˆ่จˆๅ€คใงใ™"); + int sum = 0; + for (int num : nums) { + sum += num; + } + return sum; + } + public int multiple(int num1, int num2) { int res = 0; for (int i = 0; i < num2; i++) { diff --git a/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java b/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java index ba5f4fb..7e386ee 100644 --- a/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java +++ b/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java @@ -3,15 +3,18 @@ public class ClassAndMethod { public static void main(String[] args) { -// Human human1 = new Human(); -// human1.printName(); -// Human human2 = new Human("็”ฐไธญ็ด‹ๆฌก้ƒŽ"); -// human2.printName(); + Human human1 = new Human(); + human1.printName(); + Human human2 = new Human("็”ฐไธญ็ด‹ๆฌก้ƒŽ"); + human2.printName(); Calculation calc = new Calculation(); System.out.println(calc.plus(2, 3)); -// System.out.println(calc.plus(2.0, 3.0)); -// System.out.println(calc.multiple(2, 3)); + System.out.println(calc.plus(2.0, 3.0)); + System.out.println(calc.multiple(2, 3)); + System.out.println(calc.plus(1, 2, 3)); + System.out.println(calc.plus(1, 2, 3, 4, 5)); + System.out.println(calc.plus(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)); } } diff --git a/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java b/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java new file mode 100644 index 0000000..1dd08a4 --- /dev/null +++ b/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java @@ -0,0 +1,31 @@ +package jp.co.jid.exceptionSample; + +import java.util.ArrayList; + +public class ExceptionSample { + + public static void main(String[] args) { + ExceptionSample sample = new ExceptionSample(); + ArrayList list = null; + sample.nullPointerExceptionSample(list); + sample.classNotFoundExceptiopnSample("TestClass"); + sample.numberFormatExceptionSample("ABCDE"); + } + + public void nullPointerExceptionSample(ArrayList list) { + list.size(); + } + + public void classNotFoundExceptiopnSample(String className) { + try { + Class.forName(className).newInstance(); + } catch (InstantiationException | IllegalAccessException | ClassNotFoundException e) { + e.printStackTrace(); + } + } + + public void numberFormatExceptionSample(String numStr) { + Integer.valueOf(numStr); + } + +} diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class new file mode 100644 index 0000000..be31229 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class new file mode 100644 index 0000000..4aaa734 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class 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b/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class new file mode 100644 index 0000000..f78b826 --- /dev/null +++ b/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class b/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class new file mode 100644 index 0000000..12c1935 --- /dev/null +++ b/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/stringSample/stringSample.class b/java-learning/bin/jp/co/jid/stringSample/stringSample.class index b913694..ec6a0ba 100644 --- a/java-learning/bin/jp/co/jid/stringSample/stringSample.class +++ b/java-learning/bin/jp/co/jid/stringSample/stringSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class new file mode 100644 index 0000000..ead71b8 --- /dev/null +++ b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class Binary files differ diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample1.java b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java new file mode 100644 index 0000000..efb748b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample1 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray[2]); + intArray[2] = 7; + System.out.println(intArray[2]); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample2.java b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java new file mode 100644 index 0000000..c9c24b3 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java @@ -0,0 +1,10 @@ +package jp.co.jid.arraySample; + +public class ArraySample2 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray.length); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample3.java b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java new file mode 100644 index 0000000..02c3683 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample3 { + + public static void main(String[] args) { + int array[][] = {{11, 12, 13}, {21, 22, 23}}; + for (int[] row : array) { + for (int element : row) { + System.out.print(element + "\t"); + } + System.out.print("\n"); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample4.java b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java new file mode 100644 index 0000000..7a18a4b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample4 { + + public static void main(String[] args) { + int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for (int element : array) { + System.out.println(element); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample5.java b/java-learning/src/jp/co/jid/arraySample/ArraySample5.java new file mode 100644 index 0000000..3d980b0 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample5.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample5 { + + public static void main(String[] args) { + int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for (int index = 0; index < array.length; index++) { + array[index] *= 2; + } + for (int element : array) { + System.out.println(element); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample6.java b/java-learning/src/jp/co/jid/arraySample/ArraySample6.java new file mode 100644 index 0000000..3f2da81 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample6.java @@ -0,0 +1,14 @@ +package jp.co.jid.arraySample; + +public class ArraySample6 { + + public static void main(String[] args) { + int array[][] = {{11, 12, 13}, {21, 22, 23}}; + for (int i = 0; i < 2; i++) { + for (int j = 0; j < 3; j++) { + System.out.println(array[i][j]); + } + } + } + +} diff --git a/java-learning/src/jp/co/jid/classAndMethod/Calculation.java b/java-learning/src/jp/co/jid/classAndMethod/Calculation.java index 32964dc..923e482 100644 --- a/java-learning/src/jp/co/jid/classAndMethod/Calculation.java +++ b/java-learning/src/jp/co/jid/classAndMethod/Calculation.java @@ -11,6 +11,15 @@ return num1 + num2; } + public int plus(int... nums) { + System.out.println("ๅฏๅค‰้•ทๅผ•ๆ•ฐใฎๅˆ่จˆๅ€คใงใ™"); + int sum = 0; + for (int num : nums) { + sum += num; + } + return sum; + } + public int multiple(int num1, int num2) { int res = 0; for (int i = 0; i < num2; i++) { diff --git a/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java b/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java index ba5f4fb..7e386ee 100644 --- a/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java +++ b/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java @@ -3,15 +3,18 @@ public class ClassAndMethod { public static void main(String[] args) { -// Human human1 = new Human(); -// human1.printName(); -// Human human2 = new Human("็”ฐไธญ็ด‹ๆฌก้ƒŽ"); -// human2.printName(); + Human human1 = new Human(); + human1.printName(); + Human human2 = new Human("็”ฐไธญ็ด‹ๆฌก้ƒŽ"); + human2.printName(); Calculation calc = new Calculation(); System.out.println(calc.plus(2, 3)); -// System.out.println(calc.plus(2.0, 3.0)); -// System.out.println(calc.multiple(2, 3)); + System.out.println(calc.plus(2.0, 3.0)); + System.out.println(calc.multiple(2, 3)); + System.out.println(calc.plus(1, 2, 3)); + System.out.println(calc.plus(1, 2, 3, 4, 5)); + System.out.println(calc.plus(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)); } } diff --git a/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java b/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java new file mode 100644 index 0000000..1dd08a4 --- /dev/null +++ b/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java @@ -0,0 +1,31 @@ +package jp.co.jid.exceptionSample; + +import java.util.ArrayList; + +public class ExceptionSample { + + public static void main(String[] args) { + ExceptionSample sample = new ExceptionSample(); + ArrayList list = null; + sample.nullPointerExceptionSample(list); + sample.classNotFoundExceptiopnSample("TestClass"); + sample.numberFormatExceptionSample("ABCDE"); + } + + public void nullPointerExceptionSample(ArrayList list) { + list.size(); + } + + public void classNotFoundExceptiopnSample(String className) { + try { + Class.forName(className).newInstance(); + } catch (InstantiationException | IllegalAccessException | ClassNotFoundException e) { + e.printStackTrace(); + } + } + + public void numberFormatExceptionSample(String numStr) { + Integer.valueOf(numStr); + } + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java b/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java new file mode 100644 index 0000000..2fe0d4e --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java @@ -0,0 +1,18 @@ +package jp.co.jid.extendsSample; + +public class ExtendsSample { + + public static void main(String[] args) { + Programmer pg1 = new Programmer(); + pg1.setName("ๅฑฑ็”ฐๅคช้ƒŽ"); + pg1.setPgLanguage("Java"); + System.out.println(pg1.getName() + "ใ•ใ‚“ใฏ" + pg1.getPgLanguage() + "ใ‚’ไฝฟใ†ใ“ใจใŒใงใใพใ™"); + pg1.eat(new Food()); + + Programmer2 pg2 = new Programmer2(); + pg2.setName("้ˆดๆœจ่Šฑๅญ"); + pg2.setPgLanguage("C#"); + System.out.println(pg2.getName() + "ใ•ใ‚“ใฏ" + pg2.getPgLanguage() + "ใ‚’ไฝฟใ†ใ“ใจใŒใงใใพใ™"); + } + +} diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class new file mode 100644 index 0000000..be31229 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class new file mode 100644 index 0000000..4aaa734 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class new file mode 100644 index 0000000..c81ead4 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample4.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample4.class new file mode 100644 index 0000000..e3a5d2f --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample4.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample5.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample5.class new file mode 100644 index 0000000..6f8c4e6 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample5.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample6.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample6.class new file mode 100644 index 0000000..bdedfd0 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample6.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/classAndMethod/Calculation.class b/java-learning/bin/jp/co/jid/classAndMethod/Calculation.class index e8c458e..f7c5ffc 100644 --- a/java-learning/bin/jp/co/jid/classAndMethod/Calculation.class +++ b/java-learning/bin/jp/co/jid/classAndMethod/Calculation.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class b/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class index b682f8f..4287ec1 100644 --- a/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class +++ b/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/exceptionSample/ExceptionSample.class b/java-learning/bin/jp/co/jid/exceptionSample/ExceptionSample.class new file mode 100644 index 0000000..6069b95 --- /dev/null +++ b/java-learning/bin/jp/co/jid/exceptionSample/ExceptionSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/ExtendsSample.class b/java-learning/bin/jp/co/jid/extendsSample/ExtendsSample.class new file mode 100644 index 0000000..971dbb9 --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/ExtendsSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/Food.class b/java-learning/bin/jp/co/jid/extendsSample/Food.class new file mode 100644 index 0000000..7cc9c1a --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/Food.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/Human.class b/java-learning/bin/jp/co/jid/extendsSample/Human.class new file mode 100644 index 0000000..a2a1c95 --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/Human.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/Programmer.class b/java-learning/bin/jp/co/jid/extendsSample/Programmer.class new file mode 100644 index 0000000..f91d072 --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/Programmer.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/Programmer2.class b/java-learning/bin/jp/co/jid/extendsSample/Programmer2.class new file mode 100644 index 0000000..f43b997 --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/Programmer2.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/Calculation.class b/java-learning/bin/jp/co/jid/interfaceSample/Calculation.class new file mode 100644 index 0000000..3f2f543 --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/Calculation.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/InterfaceSample.class b/java-learning/bin/jp/co/jid/interfaceSample/InterfaceSample.class new file mode 100644 index 0000000..82a05e3 --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/InterfaceSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/MathUtil.class b/java-learning/bin/jp/co/jid/interfaceSample/MathUtil.class new file mode 100644 index 0000000..833d740 --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/MathUtil.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/Minus.class b/java-learning/bin/jp/co/jid/interfaceSample/Minus.class new file mode 100644 index 0000000..119f3b8 --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/Minus.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/Plus.class b/java-learning/bin/jp/co/jid/interfaceSample/Plus.class new file mode 100644 index 0000000..fc4e66b --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/Plus.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class b/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class new file mode 100644 index 0000000..f78b826 --- /dev/null +++ b/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class b/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class new file mode 100644 index 0000000..12c1935 --- /dev/null +++ b/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/stringSample/stringSample.class b/java-learning/bin/jp/co/jid/stringSample/stringSample.class index b913694..ec6a0ba 100644 --- a/java-learning/bin/jp/co/jid/stringSample/stringSample.class +++ b/java-learning/bin/jp/co/jid/stringSample/stringSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class new file mode 100644 index 0000000..ead71b8 --- /dev/null +++ b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class Binary files differ diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample1.java b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java new file mode 100644 index 0000000..efb748b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample1 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray[2]); + intArray[2] = 7; + System.out.println(intArray[2]); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample2.java b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java new file mode 100644 index 0000000..c9c24b3 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java @@ -0,0 +1,10 @@ +package jp.co.jid.arraySample; + +public class ArraySample2 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray.length); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample3.java b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java new file mode 100644 index 0000000..02c3683 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample3 { + + public static void main(String[] args) { + int array[][] = {{11, 12, 13}, {21, 22, 23}}; + for (int[] row : array) { + for (int element : row) { + System.out.print(element + "\t"); + } + System.out.print("\n"); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample4.java b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java new file mode 100644 index 0000000..7a18a4b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample4 { + + public static void main(String[] args) { + int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for (int element : array) { + System.out.println(element); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample5.java b/java-learning/src/jp/co/jid/arraySample/ArraySample5.java new file mode 100644 index 0000000..3d980b0 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample5.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample5 { + + public static void main(String[] args) { + int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for (int index = 0; index < array.length; index++) { + array[index] *= 2; + } + for (int element : array) { + System.out.println(element); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample6.java b/java-learning/src/jp/co/jid/arraySample/ArraySample6.java new file mode 100644 index 0000000..3f2da81 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample6.java @@ -0,0 +1,14 @@ +package jp.co.jid.arraySample; + +public class ArraySample6 { + + public static void main(String[] args) { + int array[][] = {{11, 12, 13}, {21, 22, 23}}; + for (int i = 0; i < 2; i++) { + for (int j = 0; j < 3; j++) { + System.out.println(array[i][j]); + } + } + } + +} diff --git a/java-learning/src/jp/co/jid/classAndMethod/Calculation.java b/java-learning/src/jp/co/jid/classAndMethod/Calculation.java index 32964dc..923e482 100644 --- a/java-learning/src/jp/co/jid/classAndMethod/Calculation.java +++ b/java-learning/src/jp/co/jid/classAndMethod/Calculation.java @@ -11,6 +11,15 @@ return num1 + num2; } + public int plus(int... nums) { + System.out.println("ๅฏๅค‰้•ทๅผ•ๆ•ฐใฎๅˆ่จˆๅ€คใงใ™"); + int sum = 0; + for (int num : nums) { + sum += num; + } + return sum; + } + public int multiple(int num1, int num2) { int res = 0; for (int i = 0; i < num2; i++) { diff --git a/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java b/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java index ba5f4fb..7e386ee 100644 --- a/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java +++ b/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java @@ -3,15 +3,18 @@ public class ClassAndMethod { public static void main(String[] args) { -// Human human1 = new Human(); -// human1.printName(); -// Human human2 = new Human("็”ฐไธญ็ด‹ๆฌก้ƒŽ"); -// human2.printName(); + Human human1 = new Human(); + human1.printName(); + Human human2 = new Human("็”ฐไธญ็ด‹ๆฌก้ƒŽ"); + human2.printName(); Calculation calc = new Calculation(); System.out.println(calc.plus(2, 3)); -// System.out.println(calc.plus(2.0, 3.0)); -// System.out.println(calc.multiple(2, 3)); + System.out.println(calc.plus(2.0, 3.0)); + System.out.println(calc.multiple(2, 3)); + System.out.println(calc.plus(1, 2, 3)); + System.out.println(calc.plus(1, 2, 3, 4, 5)); + System.out.println(calc.plus(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)); } } diff --git a/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java b/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java new file mode 100644 index 0000000..1dd08a4 --- /dev/null +++ b/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java @@ -0,0 +1,31 @@ +package jp.co.jid.exceptionSample; + +import java.util.ArrayList; + +public class ExceptionSample { + + public static void main(String[] args) { + ExceptionSample sample = new ExceptionSample(); + ArrayList list = null; + sample.nullPointerExceptionSample(list); + sample.classNotFoundExceptiopnSample("TestClass"); + sample.numberFormatExceptionSample("ABCDE"); + } + + public void nullPointerExceptionSample(ArrayList list) { + list.size(); + } + + public void classNotFoundExceptiopnSample(String className) { + try { + Class.forName(className).newInstance(); + } catch (InstantiationException | IllegalAccessException | ClassNotFoundException e) { + e.printStackTrace(); + } + } + + public void numberFormatExceptionSample(String numStr) { + Integer.valueOf(numStr); + } + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java b/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java new file mode 100644 index 0000000..2fe0d4e --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java @@ -0,0 +1,18 @@ +package jp.co.jid.extendsSample; + +public class ExtendsSample { + + public static void main(String[] args) { + Programmer pg1 = new Programmer(); + pg1.setName("ๅฑฑ็”ฐๅคช้ƒŽ"); + pg1.setPgLanguage("Java"); + System.out.println(pg1.getName() + "ใ•ใ‚“ใฏ" + pg1.getPgLanguage() + "ใ‚’ไฝฟใ†ใ“ใจใŒใงใใพใ™"); + pg1.eat(new Food()); + + Programmer2 pg2 = new Programmer2(); + pg2.setName("้ˆดๆœจ่Šฑๅญ"); + pg2.setPgLanguage("C#"); + System.out.println(pg2.getName() + "ใ•ใ‚“ใฏ" + pg2.getPgLanguage() + "ใ‚’ไฝฟใ†ใ“ใจใŒใงใใพใ™"); + } + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Food.java b/java-learning/src/jp/co/jid/extendsSample/Food.java new file mode 100644 index 0000000..95c2556 --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Food.java @@ -0,0 +1,5 @@ +package jp.co.jid.extendsSample; + +public class Food { + +} diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class new file mode 100644 index 0000000..be31229 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class new file mode 100644 index 0000000..4aaa734 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class new file mode 100644 index 0000000..c81ead4 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample4.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample4.class new file mode 100644 index 0000000..e3a5d2f --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample4.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample5.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample5.class new file mode 100644 index 0000000..6f8c4e6 --- /dev/null +++ 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a/java-learning/bin/jp/co/jid/interfaceSample/InterfaceSample.class b/java-learning/bin/jp/co/jid/interfaceSample/InterfaceSample.class new file mode 100644 index 0000000..82a05e3 --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/InterfaceSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/MathUtil.class b/java-learning/bin/jp/co/jid/interfaceSample/MathUtil.class new file mode 100644 index 0000000..833d740 --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/MathUtil.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/Minus.class b/java-learning/bin/jp/co/jid/interfaceSample/Minus.class new file mode 100644 index 0000000..119f3b8 --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/Minus.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/Plus.class b/java-learning/bin/jp/co/jid/interfaceSample/Plus.class new file mode 100644 index 0000000..fc4e66b --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/Plus.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class b/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class new file mode 100644 index 0000000..f78b826 --- /dev/null +++ b/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class b/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class new file mode 100644 index 0000000..12c1935 --- /dev/null +++ b/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/stringSample/stringSample.class b/java-learning/bin/jp/co/jid/stringSample/stringSample.class index b913694..ec6a0ba 100644 --- a/java-learning/bin/jp/co/jid/stringSample/stringSample.class +++ b/java-learning/bin/jp/co/jid/stringSample/stringSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class new file mode 100644 index 0000000..ead71b8 --- /dev/null +++ b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class Binary files differ diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample1.java b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java new file mode 100644 index 0000000..efb748b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample1 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray[2]); + intArray[2] = 7; + System.out.println(intArray[2]); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample2.java b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java new file mode 100644 index 0000000..c9c24b3 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java @@ -0,0 +1,10 @@ +package jp.co.jid.arraySample; + +public class ArraySample2 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray.length); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample3.java b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java new file mode 100644 index 0000000..02c3683 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample3 { + + public static void main(String[] args) { + int array[][] = {{11, 12, 13}, {21, 22, 23}}; + for (int[] row : array) { + for (int element : row) { + System.out.print(element + "\t"); + } + System.out.print("\n"); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample4.java b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java new file mode 100644 index 0000000..7a18a4b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample4 { + + public static void main(String[] args) { + int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for (int element : array) { + System.out.println(element); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample5.java b/java-learning/src/jp/co/jid/arraySample/ArraySample5.java new file mode 100644 index 0000000..3d980b0 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample5.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample5 { + + public static void main(String[] args) { + int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for (int index = 0; index < array.length; index++) { + array[index] *= 2; + } + for (int element : array) { + System.out.println(element); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample6.java b/java-learning/src/jp/co/jid/arraySample/ArraySample6.java new file mode 100644 index 0000000..3f2da81 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample6.java @@ -0,0 +1,14 @@ +package jp.co.jid.arraySample; + +public class ArraySample6 { + + public static void main(String[] args) { + int array[][] = {{11, 12, 13}, {21, 22, 23}}; + for (int i = 0; i < 2; i++) { + for (int j = 0; j < 3; j++) { + System.out.println(array[i][j]); + } + } + } + +} diff --git a/java-learning/src/jp/co/jid/classAndMethod/Calculation.java b/java-learning/src/jp/co/jid/classAndMethod/Calculation.java index 32964dc..923e482 100644 --- a/java-learning/src/jp/co/jid/classAndMethod/Calculation.java +++ b/java-learning/src/jp/co/jid/classAndMethod/Calculation.java @@ -11,6 +11,15 @@ return num1 + num2; } + public int plus(int... nums) { + System.out.println("ๅฏๅค‰้•ทๅผ•ๆ•ฐใฎๅˆ่จˆๅ€คใงใ™"); + int sum = 0; + for (int num : nums) { + sum += num; + } + return sum; + } + public int multiple(int num1, int num2) { int res = 0; for (int i = 0; i < num2; i++) { diff --git a/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java b/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java index ba5f4fb..7e386ee 100644 --- a/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java +++ b/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java @@ -3,15 +3,18 @@ public class ClassAndMethod { public static void main(String[] args) { -// Human human1 = new Human(); -// human1.printName(); -// Human human2 = new Human("็”ฐไธญ็ด‹ๆฌก้ƒŽ"); -// human2.printName(); + Human human1 = new Human(); + human1.printName(); + Human human2 = new Human("็”ฐไธญ็ด‹ๆฌก้ƒŽ"); + human2.printName(); Calculation calc = new Calculation(); System.out.println(calc.plus(2, 3)); -// System.out.println(calc.plus(2.0, 3.0)); -// System.out.println(calc.multiple(2, 3)); + System.out.println(calc.plus(2.0, 3.0)); + System.out.println(calc.multiple(2, 3)); + System.out.println(calc.plus(1, 2, 3)); + System.out.println(calc.plus(1, 2, 3, 4, 5)); + System.out.println(calc.plus(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)); } } diff --git a/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java b/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java new file mode 100644 index 0000000..1dd08a4 --- /dev/null +++ b/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java @@ -0,0 +1,31 @@ +package jp.co.jid.exceptionSample; + +import java.util.ArrayList; + +public class ExceptionSample { + + public static void main(String[] args) { + ExceptionSample sample = new ExceptionSample(); + ArrayList list = null; + sample.nullPointerExceptionSample(list); + sample.classNotFoundExceptiopnSample("TestClass"); + sample.numberFormatExceptionSample("ABCDE"); + } + + public void nullPointerExceptionSample(ArrayList list) { + list.size(); + } + + public void classNotFoundExceptiopnSample(String className) { + try { + Class.forName(className).newInstance(); + } catch (InstantiationException | IllegalAccessException | ClassNotFoundException e) { + e.printStackTrace(); + } + } + + public void numberFormatExceptionSample(String numStr) { + Integer.valueOf(numStr); + } + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java b/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java new file mode 100644 index 0000000..2fe0d4e --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java @@ -0,0 +1,18 @@ +package jp.co.jid.extendsSample; + +public class ExtendsSample { + + public static void main(String[] args) { + Programmer pg1 = new Programmer(); + pg1.setName("ๅฑฑ็”ฐๅคช้ƒŽ"); + pg1.setPgLanguage("Java"); + System.out.println(pg1.getName() + "ใ•ใ‚“ใฏ" + pg1.getPgLanguage() + "ใ‚’ไฝฟใ†ใ“ใจใŒใงใใพใ™"); + pg1.eat(new Food()); + + Programmer2 pg2 = new Programmer2(); + pg2.setName("้ˆดๆœจ่Šฑๅญ"); + pg2.setPgLanguage("C#"); + System.out.println(pg2.getName() + "ใ•ใ‚“ใฏ" + pg2.getPgLanguage() + "ใ‚’ไฝฟใ†ใ“ใจใŒใงใใพใ™"); + } + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Food.java b/java-learning/src/jp/co/jid/extendsSample/Food.java new file mode 100644 index 0000000..95c2556 --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Food.java @@ -0,0 +1,5 @@ +package jp.co.jid.extendsSample; + +public class Food { + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Human.java b/java-learning/src/jp/co/jid/extendsSample/Human.java new file mode 100644 index 0000000..246500b --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Human.java @@ -0,0 +1,35 @@ +package jp.co.jid.extendsSample; + +import java.util.Date; + +public class Human { + private String name; + private int sex; + private Date birthday; + + public void walk() {} + public void unr() {} + public void eat(Food food) { + System.out.println("ๅฎถๆ—ๅ›ฃใ‚‰ใ‚“ใงๅ††ๅ“ใ‚’ๅ›ฒใ‚“ใงใ”้ฃฏใ‚’้ฃŸในใ‚‹"); + } + public void sleep() {} + + public String getName() { + return name; + } + public void setName(String name) { + this.name = name; + } + public int getSex() { + return sex; + } + public void setSex(int sex) { + this.sex = sex; + } + public Date getBirthday() { + return birthday; + } + public void setBirthday(Date birthday) { + this.birthday = birthday; + } +} diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class new file mode 100644 index 0000000..be31229 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class new file mode 100644 index 0000000..4aaa734 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class 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b/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class new file mode 100644 index 0000000..f78b826 --- /dev/null +++ b/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class b/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class new file mode 100644 index 0000000..12c1935 --- /dev/null +++ b/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/stringSample/stringSample.class b/java-learning/bin/jp/co/jid/stringSample/stringSample.class index b913694..ec6a0ba 100644 --- a/java-learning/bin/jp/co/jid/stringSample/stringSample.class +++ b/java-learning/bin/jp/co/jid/stringSample/stringSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class new file mode 100644 index 0000000..ead71b8 --- /dev/null +++ b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class Binary files differ diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample1.java b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java new file mode 100644 index 0000000..efb748b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample1 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray[2]); + intArray[2] = 7; + System.out.println(intArray[2]); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample2.java b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java new file mode 100644 index 0000000..c9c24b3 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java @@ -0,0 +1,10 @@ +package jp.co.jid.arraySample; + +public class ArraySample2 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray.length); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample3.java b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java new file mode 100644 index 0000000..02c3683 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample3 { + + public static void main(String[] args) { + int array[][] = {{11, 12, 13}, {21, 22, 23}}; + for (int[] row : array) { + for (int element : row) { + System.out.print(element + "\t"); + } + System.out.print("\n"); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample4.java b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java new file mode 100644 index 0000000..7a18a4b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample4 { + + public static void main(String[] args) { + int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for (int element : array) { + System.out.println(element); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample5.java b/java-learning/src/jp/co/jid/arraySample/ArraySample5.java new file mode 100644 index 0000000..3d980b0 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample5.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample5 { + + public static void main(String[] args) { + int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for (int index = 0; index < array.length; index++) { + array[index] *= 2; + } + for (int element : array) { + System.out.println(element); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample6.java b/java-learning/src/jp/co/jid/arraySample/ArraySample6.java new file mode 100644 index 0000000..3f2da81 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample6.java @@ -0,0 +1,14 @@ +package jp.co.jid.arraySample; + +public class ArraySample6 { + + public static void main(String[] args) { + int array[][] = {{11, 12, 13}, {21, 22, 23}}; + for (int i = 0; i < 2; i++) { + for (int j = 0; j < 3; j++) { + System.out.println(array[i][j]); + } + } + } + +} diff --git a/java-learning/src/jp/co/jid/classAndMethod/Calculation.java b/java-learning/src/jp/co/jid/classAndMethod/Calculation.java index 32964dc..923e482 100644 --- a/java-learning/src/jp/co/jid/classAndMethod/Calculation.java +++ b/java-learning/src/jp/co/jid/classAndMethod/Calculation.java @@ -11,6 +11,15 @@ return num1 + num2; } + public int plus(int... nums) { + System.out.println("ๅฏๅค‰้•ทๅผ•ๆ•ฐใฎๅˆ่จˆๅ€คใงใ™"); + int sum = 0; + for (int num : nums) { + sum += num; + } + return sum; + } + public int multiple(int num1, int num2) { int res = 0; for (int i = 0; i < num2; i++) { diff --git a/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java b/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java index ba5f4fb..7e386ee 100644 --- a/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java +++ b/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java @@ -3,15 +3,18 @@ public class ClassAndMethod { public static void main(String[] args) { -// Human human1 = new Human(); -// human1.printName(); -// Human human2 = new Human("็”ฐไธญ็ด‹ๆฌก้ƒŽ"); -// human2.printName(); + Human human1 = new Human(); + human1.printName(); + Human human2 = new Human("็”ฐไธญ็ด‹ๆฌก้ƒŽ"); + human2.printName(); Calculation calc = new Calculation(); System.out.println(calc.plus(2, 3)); -// System.out.println(calc.plus(2.0, 3.0)); -// System.out.println(calc.multiple(2, 3)); + System.out.println(calc.plus(2.0, 3.0)); + System.out.println(calc.multiple(2, 3)); + System.out.println(calc.plus(1, 2, 3)); + System.out.println(calc.plus(1, 2, 3, 4, 5)); + System.out.println(calc.plus(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)); } } diff --git a/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java b/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java new file mode 100644 index 0000000..1dd08a4 --- /dev/null +++ b/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java @@ -0,0 +1,31 @@ +package jp.co.jid.exceptionSample; + +import java.util.ArrayList; + +public class ExceptionSample { + + public static void main(String[] args) { + ExceptionSample sample = new ExceptionSample(); + ArrayList list = null; + sample.nullPointerExceptionSample(list); + sample.classNotFoundExceptiopnSample("TestClass"); + sample.numberFormatExceptionSample("ABCDE"); + } + + public void nullPointerExceptionSample(ArrayList list) { + list.size(); + } + + public void classNotFoundExceptiopnSample(String className) { + try { + Class.forName(className).newInstance(); + } catch (InstantiationException | IllegalAccessException | ClassNotFoundException e) { + e.printStackTrace(); + } + } + + public void numberFormatExceptionSample(String numStr) { + Integer.valueOf(numStr); + } + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java b/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java new file mode 100644 index 0000000..2fe0d4e --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java @@ -0,0 +1,18 @@ +package jp.co.jid.extendsSample; + +public class ExtendsSample { + + public static void main(String[] args) { + Programmer pg1 = new Programmer(); + pg1.setName("ๅฑฑ็”ฐๅคช้ƒŽ"); + pg1.setPgLanguage("Java"); + System.out.println(pg1.getName() + "ใ•ใ‚“ใฏ" + pg1.getPgLanguage() + "ใ‚’ไฝฟใ†ใ“ใจใŒใงใใพใ™"); + pg1.eat(new Food()); + + Programmer2 pg2 = new Programmer2(); + pg2.setName("้ˆดๆœจ่Šฑๅญ"); + pg2.setPgLanguage("C#"); + System.out.println(pg2.getName() + "ใ•ใ‚“ใฏ" + pg2.getPgLanguage() + "ใ‚’ไฝฟใ†ใ“ใจใŒใงใใพใ™"); + } + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Food.java b/java-learning/src/jp/co/jid/extendsSample/Food.java new file mode 100644 index 0000000..95c2556 --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Food.java @@ -0,0 +1,5 @@ +package jp.co.jid.extendsSample; + +public class Food { + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Human.java b/java-learning/src/jp/co/jid/extendsSample/Human.java new file mode 100644 index 0000000..246500b --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Human.java @@ -0,0 +1,35 @@ +package jp.co.jid.extendsSample; + +import java.util.Date; + +public class Human { + private String name; + private int sex; + private Date birthday; + + public void walk() {} + public void unr() {} + public void eat(Food food) { + System.out.println("ๅฎถๆ—ๅ›ฃใ‚‰ใ‚“ใงๅ††ๅ“ใ‚’ๅ›ฒใ‚“ใงใ”้ฃฏใ‚’้ฃŸในใ‚‹"); + } + public void sleep() {} + + public String getName() { + return name; + } + public void setName(String name) { + this.name = name; + } + public int getSex() { + return sex; + } + public void setSex(int sex) { + this.sex = sex; + } + public Date getBirthday() { + return birthday; + } + public void setBirthday(Date birthday) { + this.birthday = birthday; + } +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Programmer.java b/java-learning/src/jp/co/jid/extendsSample/Programmer.java new file mode 100644 index 0000000..58bb117 --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Programmer.java @@ -0,0 +1,21 @@ +package jp.co.jid.extendsSample; + +public class Programmer extends Human { + private String pgLanguage; + + public void programing() {} + + @Override + public void eat(Food food) { + super.eat(food); + System.out.println("PCใซๅ‘ใ‹ใฃใฆไป•ไบ‹ใ‚’ใ—ใชใŒใ‚‰ใ”้ฃฏใ‚’้ฃŸในใ‚‹"); + } + + public String getPgLanguage() { + return pgLanguage; + } + + public void setPgLanguage(String pgLanguage) { + this.pgLanguage = pgLanguage; + } +} diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class new file mode 100644 index 0000000..be31229 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class new file mode 100644 index 0000000..4aaa734 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class new file mode 100644 index 0000000..c81ead4 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample4.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample4.class new file mode 100644 index 0000000..e3a5d2f --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample4.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample5.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample5.class new file mode 100644 index 0000000..6f8c4e6 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample5.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample6.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample6.class new file mode 100644 index 0000000..bdedfd0 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample6.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/classAndMethod/Calculation.class b/java-learning/bin/jp/co/jid/classAndMethod/Calculation.class index e8c458e..f7c5ffc 100644 --- a/java-learning/bin/jp/co/jid/classAndMethod/Calculation.class +++ b/java-learning/bin/jp/co/jid/classAndMethod/Calculation.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class b/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class index b682f8f..4287ec1 100644 --- a/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class +++ b/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/exceptionSample/ExceptionSample.class b/java-learning/bin/jp/co/jid/exceptionSample/ExceptionSample.class new file mode 100644 index 0000000..6069b95 --- /dev/null +++ b/java-learning/bin/jp/co/jid/exceptionSample/ExceptionSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/ExtendsSample.class b/java-learning/bin/jp/co/jid/extendsSample/ExtendsSample.class new file mode 100644 index 0000000..971dbb9 --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/ExtendsSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/Food.class b/java-learning/bin/jp/co/jid/extendsSample/Food.class new file mode 100644 index 0000000..7cc9c1a --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/Food.class Binary files differ diff 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a/java-learning/bin/jp/co/jid/interfaceSample/Plus.class b/java-learning/bin/jp/co/jid/interfaceSample/Plus.class new file mode 100644 index 0000000..fc4e66b --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/Plus.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class b/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class new file mode 100644 index 0000000..f78b826 --- /dev/null +++ b/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class b/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class new file mode 100644 index 0000000..12c1935 --- /dev/null +++ b/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/stringSample/stringSample.class b/java-learning/bin/jp/co/jid/stringSample/stringSample.class index b913694..ec6a0ba 100644 --- a/java-learning/bin/jp/co/jid/stringSample/stringSample.class +++ b/java-learning/bin/jp/co/jid/stringSample/stringSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class new file mode 100644 index 0000000..ead71b8 --- /dev/null +++ b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class Binary files differ diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample1.java b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java new file mode 100644 index 0000000..efb748b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample1 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray[2]); + intArray[2] = 7; + System.out.println(intArray[2]); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample2.java b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java new file mode 100644 index 0000000..c9c24b3 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java @@ -0,0 +1,10 @@ +package jp.co.jid.arraySample; + +public class ArraySample2 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray.length); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample3.java b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java new file mode 100644 index 0000000..02c3683 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample3 { + + public static void main(String[] args) { + int array[][] = {{11, 12, 13}, {21, 22, 23}}; + for (int[] row : array) { + for (int element : row) { + System.out.print(element + "\t"); + } + System.out.print("\n"); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample4.java b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java new file mode 100644 index 0000000..7a18a4b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample4 { + + public static void main(String[] args) { + int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for (int element : array) { + System.out.println(element); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample5.java b/java-learning/src/jp/co/jid/arraySample/ArraySample5.java new file mode 100644 index 0000000..3d980b0 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample5.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample5 { + + public static void main(String[] args) { + int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for (int index = 0; index < array.length; index++) { + array[index] *= 2; + } + for (int element : array) { + System.out.println(element); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample6.java b/java-learning/src/jp/co/jid/arraySample/ArraySample6.java new file mode 100644 index 0000000..3f2da81 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample6.java @@ -0,0 +1,14 @@ +package jp.co.jid.arraySample; + +public class ArraySample6 { + + public static void main(String[] args) { + int array[][] = {{11, 12, 13}, {21, 22, 23}}; + for (int i = 0; i < 2; i++) { + for (int j = 0; j < 3; j++) { + System.out.println(array[i][j]); + } + } + } + +} diff --git a/java-learning/src/jp/co/jid/classAndMethod/Calculation.java b/java-learning/src/jp/co/jid/classAndMethod/Calculation.java index 32964dc..923e482 100644 --- a/java-learning/src/jp/co/jid/classAndMethod/Calculation.java +++ b/java-learning/src/jp/co/jid/classAndMethod/Calculation.java @@ -11,6 +11,15 @@ return num1 + num2; } + public int plus(int... nums) { + System.out.println("ๅฏๅค‰้•ทๅผ•ๆ•ฐใฎๅˆ่จˆๅ€คใงใ™"); + int sum = 0; + for (int num : nums) { + sum += num; + } + return sum; + } + public int multiple(int num1, int num2) { int res = 0; for (int i = 0; i < num2; i++) { diff --git a/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java b/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java index ba5f4fb..7e386ee 100644 --- a/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java +++ b/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java @@ -3,15 +3,18 @@ public class ClassAndMethod { public static void main(String[] args) { -// Human human1 = new Human(); -// human1.printName(); -// Human human2 = new Human("็”ฐไธญ็ด‹ๆฌก้ƒŽ"); -// human2.printName(); + Human human1 = new Human(); + human1.printName(); + Human human2 = new Human("็”ฐไธญ็ด‹ๆฌก้ƒŽ"); + human2.printName(); Calculation calc = new Calculation(); System.out.println(calc.plus(2, 3)); -// System.out.println(calc.plus(2.0, 3.0)); -// System.out.println(calc.multiple(2, 3)); + System.out.println(calc.plus(2.0, 3.0)); + System.out.println(calc.multiple(2, 3)); + System.out.println(calc.plus(1, 2, 3)); + System.out.println(calc.plus(1, 2, 3, 4, 5)); + System.out.println(calc.plus(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)); } } diff --git a/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java b/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java new file mode 100644 index 0000000..1dd08a4 --- /dev/null +++ b/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java @@ -0,0 +1,31 @@ +package jp.co.jid.exceptionSample; + +import java.util.ArrayList; + +public class ExceptionSample { + + public static void main(String[] args) { + ExceptionSample sample = new ExceptionSample(); + ArrayList list = null; + sample.nullPointerExceptionSample(list); + sample.classNotFoundExceptiopnSample("TestClass"); + sample.numberFormatExceptionSample("ABCDE"); + } + + public void nullPointerExceptionSample(ArrayList list) { + list.size(); + } + + public void classNotFoundExceptiopnSample(String className) { + try { + Class.forName(className).newInstance(); + } catch (InstantiationException | IllegalAccessException | ClassNotFoundException e) { + e.printStackTrace(); + } + } + + public void numberFormatExceptionSample(String numStr) { + Integer.valueOf(numStr); + } + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java b/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java new file mode 100644 index 0000000..2fe0d4e --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java @@ -0,0 +1,18 @@ +package jp.co.jid.extendsSample; + +public class ExtendsSample { + + public static void main(String[] args) { + Programmer pg1 = new Programmer(); + pg1.setName("ๅฑฑ็”ฐๅคช้ƒŽ"); + pg1.setPgLanguage("Java"); + System.out.println(pg1.getName() + "ใ•ใ‚“ใฏ" + pg1.getPgLanguage() + "ใ‚’ไฝฟใ†ใ“ใจใŒใงใใพใ™"); + pg1.eat(new Food()); + + Programmer2 pg2 = new Programmer2(); + pg2.setName("้ˆดๆœจ่Šฑๅญ"); + pg2.setPgLanguage("C#"); + System.out.println(pg2.getName() + "ใ•ใ‚“ใฏ" + pg2.getPgLanguage() + "ใ‚’ไฝฟใ†ใ“ใจใŒใงใใพใ™"); + } + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Food.java b/java-learning/src/jp/co/jid/extendsSample/Food.java new file mode 100644 index 0000000..95c2556 --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Food.java @@ -0,0 +1,5 @@ +package jp.co.jid.extendsSample; + +public class Food { + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Human.java b/java-learning/src/jp/co/jid/extendsSample/Human.java new file mode 100644 index 0000000..246500b --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Human.java @@ -0,0 +1,35 @@ +package jp.co.jid.extendsSample; + +import java.util.Date; + +public class Human { + private String name; + private int sex; + private Date birthday; + + public void walk() {} + public void unr() {} + public void eat(Food food) { + System.out.println("ๅฎถๆ—ๅ›ฃใ‚‰ใ‚“ใงๅ††ๅ“ใ‚’ๅ›ฒใ‚“ใงใ”้ฃฏใ‚’้ฃŸในใ‚‹"); + } + public void sleep() {} + + public String getName() { + return name; + } + public void setName(String name) { + this.name = name; + } + public int getSex() { + return sex; + } + public void setSex(int sex) { + this.sex = sex; + } + public Date getBirthday() { + return birthday; + } + public void setBirthday(Date birthday) { + this.birthday = birthday; + } +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Programmer.java b/java-learning/src/jp/co/jid/extendsSample/Programmer.java new file mode 100644 index 0000000..58bb117 --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Programmer.java @@ -0,0 +1,21 @@ +package jp.co.jid.extendsSample; + +public class Programmer extends Human { + private String pgLanguage; + + public void programing() {} + + @Override + public void eat(Food food) { + super.eat(food); + System.out.println("PCใซๅ‘ใ‹ใฃใฆไป•ไบ‹ใ‚’ใ—ใชใŒใ‚‰ใ”้ฃฏใ‚’้ฃŸในใ‚‹"); + } + + public String getPgLanguage() { + return pgLanguage; + } + + public void setPgLanguage(String pgLanguage) { + this.pgLanguage = pgLanguage; + } +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Programmer2.java b/java-learning/src/jp/co/jid/extendsSample/Programmer2.java new file mode 100644 index 0000000..2b477fe --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Programmer2.java @@ -0,0 +1,41 @@ +package jp.co.jid.extendsSample; + +import java.util.Date; + +public class Programmer2 { + private String name; + private int sex; + private Date birthday; + private String pgLanguage; + + public void walk() {} + public void unr() {} + public void eat(Food food) {} + public void sleep() {} + public void programing() {} + + public String getName() { + return name; + } + public void setName(String name) { + this.name = name; + } + public int getSex() { + return sex; + } + public void setSex(int sex) { + this.sex = sex; + } + public Date getBirthday() { + return birthday; + } + public void setBirthday(Date birthday) { + this.birthday = birthday; + } + public String getPgLanguage() { + return pgLanguage; + } + public void setPgLanguage(String pgLanguage) { + this.pgLanguage = pgLanguage; + } +} diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class new file mode 100644 index 0000000..be31229 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class new file mode 100644 index 0000000..4aaa734 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class 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a/java-learning/bin/jp/co/jid/classAndMethod/Calculation.class b/java-learning/bin/jp/co/jid/classAndMethod/Calculation.class index e8c458e..f7c5ffc 100644 --- a/java-learning/bin/jp/co/jid/classAndMethod/Calculation.class +++ b/java-learning/bin/jp/co/jid/classAndMethod/Calculation.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class b/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class index b682f8f..4287ec1 100644 --- a/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class +++ b/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/exceptionSample/ExceptionSample.class b/java-learning/bin/jp/co/jid/exceptionSample/ExceptionSample.class new file mode 100644 index 0000000..6069b95 --- /dev/null +++ b/java-learning/bin/jp/co/jid/exceptionSample/ExceptionSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/ExtendsSample.class b/java-learning/bin/jp/co/jid/extendsSample/ExtendsSample.class new file mode 100644 index 0000000..971dbb9 --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/ExtendsSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/Food.class b/java-learning/bin/jp/co/jid/extendsSample/Food.class new file mode 100644 index 0000000..7cc9c1a --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/Food.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/Human.class b/java-learning/bin/jp/co/jid/extendsSample/Human.class new file mode 100644 index 0000000..a2a1c95 --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/Human.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/Programmer.class b/java-learning/bin/jp/co/jid/extendsSample/Programmer.class new file mode 100644 index 0000000..f91d072 --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/Programmer.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/Programmer2.class b/java-learning/bin/jp/co/jid/extendsSample/Programmer2.class new file mode 100644 index 0000000..f43b997 --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/Programmer2.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/Calculation.class b/java-learning/bin/jp/co/jid/interfaceSample/Calculation.class new file mode 100644 index 0000000..3f2f543 --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/Calculation.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/InterfaceSample.class b/java-learning/bin/jp/co/jid/interfaceSample/InterfaceSample.class new file mode 100644 index 0000000..82a05e3 --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/InterfaceSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/MathUtil.class b/java-learning/bin/jp/co/jid/interfaceSample/MathUtil.class new file mode 100644 index 0000000..833d740 --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/MathUtil.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/Minus.class b/java-learning/bin/jp/co/jid/interfaceSample/Minus.class new file mode 100644 index 0000000..119f3b8 --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/Minus.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/Plus.class b/java-learning/bin/jp/co/jid/interfaceSample/Plus.class new file mode 100644 index 0000000..fc4e66b --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/Plus.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class b/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class new file mode 100644 index 0000000..f78b826 --- /dev/null +++ b/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class b/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class new file mode 100644 index 0000000..12c1935 --- /dev/null +++ b/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/stringSample/stringSample.class b/java-learning/bin/jp/co/jid/stringSample/stringSample.class index b913694..ec6a0ba 100644 --- a/java-learning/bin/jp/co/jid/stringSample/stringSample.class +++ b/java-learning/bin/jp/co/jid/stringSample/stringSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class new file mode 100644 index 0000000..ead71b8 --- /dev/null +++ b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class Binary files differ diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample1.java b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java new file mode 100644 index 0000000..efb748b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample1 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray[2]); + intArray[2] = 7; + System.out.println(intArray[2]); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample2.java b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java new file mode 100644 index 0000000..c9c24b3 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java @@ -0,0 +1,10 @@ +package jp.co.jid.arraySample; + +public class ArraySample2 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray.length); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample3.java b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java new file mode 100644 index 0000000..02c3683 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample3 { + + public static void main(String[] args) { + int array[][] = {{11, 12, 13}, {21, 22, 23}}; + for (int[] row : array) { + for (int element : row) { + System.out.print(element + "\t"); + } + System.out.print("\n"); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample4.java b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java new file mode 100644 index 0000000..7a18a4b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample4 { + + public static void main(String[] args) { + int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for (int element : array) { + System.out.println(element); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample5.java b/java-learning/src/jp/co/jid/arraySample/ArraySample5.java new file mode 100644 index 0000000..3d980b0 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample5.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample5 { + + public static void main(String[] args) { + int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for (int index = 0; index < array.length; index++) { + array[index] *= 2; + } + for (int element : array) { + System.out.println(element); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample6.java b/java-learning/src/jp/co/jid/arraySample/ArraySample6.java new file mode 100644 index 0000000..3f2da81 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample6.java @@ -0,0 +1,14 @@ +package jp.co.jid.arraySample; + +public class ArraySample6 { + + public static void main(String[] args) { + int array[][] = {{11, 12, 13}, {21, 22, 23}}; + for (int i = 0; i < 2; i++) { + for (int j = 0; j < 3; j++) { + System.out.println(array[i][j]); + } + } + } + +} diff --git a/java-learning/src/jp/co/jid/classAndMethod/Calculation.java b/java-learning/src/jp/co/jid/classAndMethod/Calculation.java index 32964dc..923e482 100644 --- a/java-learning/src/jp/co/jid/classAndMethod/Calculation.java +++ b/java-learning/src/jp/co/jid/classAndMethod/Calculation.java @@ -11,6 +11,15 @@ return num1 + num2; } + public int plus(int... nums) { + System.out.println("ๅฏๅค‰้•ทๅผ•ๆ•ฐใฎๅˆ่จˆๅ€คใงใ™"); + int sum = 0; + for (int num : nums) { + sum += num; + } + return sum; + } + public int multiple(int num1, int num2) { int res = 0; for (int i = 0; i < num2; i++) { diff --git a/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java b/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java index ba5f4fb..7e386ee 100644 --- a/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java +++ b/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java @@ -3,15 +3,18 @@ public class ClassAndMethod { public static void main(String[] args) { -// Human human1 = new Human(); -// human1.printName(); -// Human human2 = new Human("็”ฐไธญ็ด‹ๆฌก้ƒŽ"); -// human2.printName(); + Human human1 = new Human(); + human1.printName(); + Human human2 = new Human("็”ฐไธญ็ด‹ๆฌก้ƒŽ"); + human2.printName(); Calculation calc = new Calculation(); System.out.println(calc.plus(2, 3)); -// System.out.println(calc.plus(2.0, 3.0)); -// System.out.println(calc.multiple(2, 3)); + System.out.println(calc.plus(2.0, 3.0)); + System.out.println(calc.multiple(2, 3)); + System.out.println(calc.plus(1, 2, 3)); + System.out.println(calc.plus(1, 2, 3, 4, 5)); + System.out.println(calc.plus(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)); } } diff --git a/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java b/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java new file mode 100644 index 0000000..1dd08a4 --- /dev/null +++ b/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java @@ -0,0 +1,31 @@ +package jp.co.jid.exceptionSample; + +import java.util.ArrayList; + +public class ExceptionSample { + + public static void main(String[] args) { + ExceptionSample sample = new ExceptionSample(); + ArrayList list = null; + sample.nullPointerExceptionSample(list); + sample.classNotFoundExceptiopnSample("TestClass"); + sample.numberFormatExceptionSample("ABCDE"); + } + + public void nullPointerExceptionSample(ArrayList list) { + list.size(); + } + + public void classNotFoundExceptiopnSample(String className) { + try { + Class.forName(className).newInstance(); + } catch (InstantiationException | IllegalAccessException | ClassNotFoundException e) { + e.printStackTrace(); + } + } + + public void numberFormatExceptionSample(String numStr) { + Integer.valueOf(numStr); + } + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java b/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java new file mode 100644 index 0000000..2fe0d4e --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java @@ -0,0 +1,18 @@ +package jp.co.jid.extendsSample; + +public class ExtendsSample { + + public static void main(String[] args) { + Programmer pg1 = new Programmer(); + pg1.setName("ๅฑฑ็”ฐๅคช้ƒŽ"); + pg1.setPgLanguage("Java"); + System.out.println(pg1.getName() + "ใ•ใ‚“ใฏ" + pg1.getPgLanguage() + "ใ‚’ไฝฟใ†ใ“ใจใŒใงใใพใ™"); + pg1.eat(new Food()); + + Programmer2 pg2 = new Programmer2(); + pg2.setName("้ˆดๆœจ่Šฑๅญ"); + pg2.setPgLanguage("C#"); + System.out.println(pg2.getName() + "ใ•ใ‚“ใฏ" + pg2.getPgLanguage() + "ใ‚’ไฝฟใ†ใ“ใจใŒใงใใพใ™"); + } + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Food.java b/java-learning/src/jp/co/jid/extendsSample/Food.java new file mode 100644 index 0000000..95c2556 --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Food.java @@ -0,0 +1,5 @@ +package jp.co.jid.extendsSample; + +public class Food { + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Human.java b/java-learning/src/jp/co/jid/extendsSample/Human.java new file mode 100644 index 0000000..246500b --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Human.java @@ -0,0 +1,35 @@ +package jp.co.jid.extendsSample; + +import java.util.Date; + +public class Human { + private String name; + private int sex; + private Date birthday; + + public void walk() {} + public void unr() {} + public void eat(Food food) { + System.out.println("ๅฎถๆ—ๅ›ฃใ‚‰ใ‚“ใงๅ††ๅ“ใ‚’ๅ›ฒใ‚“ใงใ”้ฃฏใ‚’้ฃŸในใ‚‹"); + } + public void sleep() {} + + public String getName() { + return name; + } + public void setName(String name) { + this.name = name; + } + public int getSex() { + return sex; + } + public void setSex(int sex) { + this.sex = sex; + } + public Date getBirthday() { + return birthday; + } + public void setBirthday(Date birthday) { + this.birthday = birthday; + } +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Programmer.java b/java-learning/src/jp/co/jid/extendsSample/Programmer.java new file mode 100644 index 0000000..58bb117 --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Programmer.java @@ -0,0 +1,21 @@ +package jp.co.jid.extendsSample; + +public class Programmer extends Human { + private String pgLanguage; + + public void programing() {} + + @Override + public void eat(Food food) { + super.eat(food); + System.out.println("PCใซๅ‘ใ‹ใฃใฆไป•ไบ‹ใ‚’ใ—ใชใŒใ‚‰ใ”้ฃฏใ‚’้ฃŸในใ‚‹"); + } + + public String getPgLanguage() { + return pgLanguage; + } + + public void setPgLanguage(String pgLanguage) { + this.pgLanguage = pgLanguage; + } +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Programmer2.java b/java-learning/src/jp/co/jid/extendsSample/Programmer2.java new file mode 100644 index 0000000..2b477fe --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Programmer2.java @@ -0,0 +1,41 @@ +package jp.co.jid.extendsSample; + +import java.util.Date; + +public class Programmer2 { + private String name; + private int sex; + private Date birthday; + private String pgLanguage; + + public void walk() {} + public void unr() {} + public void eat(Food food) {} + public void sleep() {} + public void programing() {} + + public String getName() { + return name; + } + public void setName(String name) { + this.name = name; + } + public int getSex() { + return sex; + } + public void setSex(int sex) { + this.sex = sex; + } + public Date getBirthday() { + return birthday; + } + public void setBirthday(Date birthday) { + this.birthday = birthday; + } + public String getPgLanguage() { + return pgLanguage; + } + public void setPgLanguage(String pgLanguage) { + this.pgLanguage = pgLanguage; + } +} diff --git a/java-learning/src/jp/co/jid/interfaceSample/Calculation.java b/java-learning/src/jp/co/jid/interfaceSample/Calculation.java new file mode 100644 index 0000000..983ca36 --- /dev/null +++ b/java-learning/src/jp/co/jid/interfaceSample/Calculation.java @@ -0,0 +1,7 @@ +package jp.co.jid.interfaceSample; + +public interface Calculation { + default public int calc(int x, int y) { + return x + y; + } +} diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class new file mode 100644 index 0000000..be31229 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class new file mode 100644 index 0000000..4aaa734 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class new file mode 100644 index 0000000..c81ead4 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample4.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample4.class new file mode 100644 index 0000000..e3a5d2f --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample4.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample5.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample5.class new file mode 100644 index 0000000..6f8c4e6 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample5.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample6.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample6.class new file mode 100644 index 0000000..bdedfd0 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample6.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/classAndMethod/Calculation.class b/java-learning/bin/jp/co/jid/classAndMethod/Calculation.class index e8c458e..f7c5ffc 100644 --- a/java-learning/bin/jp/co/jid/classAndMethod/Calculation.class +++ b/java-learning/bin/jp/co/jid/classAndMethod/Calculation.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class b/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class index b682f8f..4287ec1 100644 --- a/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class +++ b/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/exceptionSample/ExceptionSample.class b/java-learning/bin/jp/co/jid/exceptionSample/ExceptionSample.class new file mode 100644 index 0000000..6069b95 --- /dev/null +++ b/java-learning/bin/jp/co/jid/exceptionSample/ExceptionSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/ExtendsSample.class b/java-learning/bin/jp/co/jid/extendsSample/ExtendsSample.class new file mode 100644 index 0000000..971dbb9 --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/ExtendsSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/Food.class b/java-learning/bin/jp/co/jid/extendsSample/Food.class new file mode 100644 index 0000000..7cc9c1a --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/Food.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/Human.class b/java-learning/bin/jp/co/jid/extendsSample/Human.class new file mode 100644 index 0000000..a2a1c95 --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/Human.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/Programmer.class b/java-learning/bin/jp/co/jid/extendsSample/Programmer.class new file mode 100644 index 0000000..f91d072 --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/Programmer.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/Programmer2.class b/java-learning/bin/jp/co/jid/extendsSample/Programmer2.class new file mode 100644 index 0000000..f43b997 --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/Programmer2.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/Calculation.class b/java-learning/bin/jp/co/jid/interfaceSample/Calculation.class new file mode 100644 index 0000000..3f2f543 --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/Calculation.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/InterfaceSample.class b/java-learning/bin/jp/co/jid/interfaceSample/InterfaceSample.class new file mode 100644 index 0000000..82a05e3 --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/InterfaceSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/MathUtil.class b/java-learning/bin/jp/co/jid/interfaceSample/MathUtil.class new file mode 100644 index 0000000..833d740 --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/MathUtil.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/Minus.class b/java-learning/bin/jp/co/jid/interfaceSample/Minus.class new file mode 100644 index 0000000..119f3b8 --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/Minus.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/Plus.class b/java-learning/bin/jp/co/jid/interfaceSample/Plus.class new file mode 100644 index 0000000..fc4e66b --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/Plus.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class b/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class new file mode 100644 index 0000000..f78b826 --- /dev/null +++ b/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class b/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class new file mode 100644 index 0000000..12c1935 --- /dev/null +++ b/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/stringSample/stringSample.class b/java-learning/bin/jp/co/jid/stringSample/stringSample.class index b913694..ec6a0ba 100644 --- a/java-learning/bin/jp/co/jid/stringSample/stringSample.class +++ b/java-learning/bin/jp/co/jid/stringSample/stringSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class new file mode 100644 index 0000000..ead71b8 --- /dev/null +++ b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class Binary files differ diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample1.java b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java new file mode 100644 index 0000000..efb748b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample1 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray[2]); + intArray[2] = 7; + System.out.println(intArray[2]); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample2.java b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java new file mode 100644 index 0000000..c9c24b3 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java @@ -0,0 +1,10 @@ +package jp.co.jid.arraySample; + +public class ArraySample2 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray.length); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample3.java b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java new file mode 100644 index 0000000..02c3683 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample3 { + + public static void main(String[] args) { + int array[][] = {{11, 12, 13}, {21, 22, 23}}; + for (int[] row : array) { + for (int element : row) { + System.out.print(element + "\t"); + } + System.out.print("\n"); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample4.java b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java new file mode 100644 index 0000000..7a18a4b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample4 { + + public static void main(String[] args) { + int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for (int element : array) { + System.out.println(element); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample5.java b/java-learning/src/jp/co/jid/arraySample/ArraySample5.java new file mode 100644 index 0000000..3d980b0 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample5.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample5 { + + public static void main(String[] args) { + int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for (int index = 0; index < array.length; index++) { + array[index] *= 2; + } + for (int element : array) { + System.out.println(element); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample6.java b/java-learning/src/jp/co/jid/arraySample/ArraySample6.java new file mode 100644 index 0000000..3f2da81 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample6.java @@ -0,0 +1,14 @@ +package jp.co.jid.arraySample; + +public class ArraySample6 { + + public static void main(String[] args) { + int array[][] = {{11, 12, 13}, {21, 22, 23}}; + for (int i = 0; i < 2; i++) { + for (int j = 0; j < 3; j++) { + System.out.println(array[i][j]); + } + } + } + +} diff --git a/java-learning/src/jp/co/jid/classAndMethod/Calculation.java b/java-learning/src/jp/co/jid/classAndMethod/Calculation.java index 32964dc..923e482 100644 --- a/java-learning/src/jp/co/jid/classAndMethod/Calculation.java +++ b/java-learning/src/jp/co/jid/classAndMethod/Calculation.java @@ -11,6 +11,15 @@ return num1 + num2; } + public int plus(int... nums) { + System.out.println("ๅฏๅค‰้•ทๅผ•ๆ•ฐใฎๅˆ่จˆๅ€คใงใ™"); + int sum = 0; + for (int num : nums) { + sum += num; + } + return sum; + } + public int multiple(int num1, int num2) { int res = 0; for (int i = 0; i < num2; i++) { diff --git a/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java b/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java index ba5f4fb..7e386ee 100644 --- a/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java +++ b/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java @@ -3,15 +3,18 @@ public class ClassAndMethod { public static void main(String[] args) { -// Human human1 = new Human(); -// human1.printName(); -// Human human2 = new Human("็”ฐไธญ็ด‹ๆฌก้ƒŽ"); -// human2.printName(); + Human human1 = new Human(); + human1.printName(); + Human human2 = new Human("็”ฐไธญ็ด‹ๆฌก้ƒŽ"); + human2.printName(); Calculation calc = new Calculation(); System.out.println(calc.plus(2, 3)); -// System.out.println(calc.plus(2.0, 3.0)); -// System.out.println(calc.multiple(2, 3)); + System.out.println(calc.plus(2.0, 3.0)); + System.out.println(calc.multiple(2, 3)); + System.out.println(calc.plus(1, 2, 3)); + System.out.println(calc.plus(1, 2, 3, 4, 5)); + System.out.println(calc.plus(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)); } } diff --git a/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java b/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java new file mode 100644 index 0000000..1dd08a4 --- /dev/null +++ b/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java @@ -0,0 +1,31 @@ +package jp.co.jid.exceptionSample; + +import java.util.ArrayList; + +public class ExceptionSample { + + public static void main(String[] args) { + ExceptionSample sample = new ExceptionSample(); + ArrayList list = null; + sample.nullPointerExceptionSample(list); + sample.classNotFoundExceptiopnSample("TestClass"); + sample.numberFormatExceptionSample("ABCDE"); + } + + public void nullPointerExceptionSample(ArrayList list) { + list.size(); + } + + public void classNotFoundExceptiopnSample(String className) { + try { + Class.forName(className).newInstance(); + } catch (InstantiationException | IllegalAccessException | ClassNotFoundException e) { + e.printStackTrace(); + } + } + + public void numberFormatExceptionSample(String numStr) { + Integer.valueOf(numStr); + } + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java b/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java new file mode 100644 index 0000000..2fe0d4e --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java @@ -0,0 +1,18 @@ +package jp.co.jid.extendsSample; + +public class ExtendsSample { + + public static void main(String[] args) { + Programmer pg1 = new Programmer(); + pg1.setName("ๅฑฑ็”ฐๅคช้ƒŽ"); + pg1.setPgLanguage("Java"); + System.out.println(pg1.getName() + "ใ•ใ‚“ใฏ" + pg1.getPgLanguage() + "ใ‚’ไฝฟใ†ใ“ใจใŒใงใใพใ™"); + pg1.eat(new Food()); + + Programmer2 pg2 = new Programmer2(); + pg2.setName("้ˆดๆœจ่Šฑๅญ"); + pg2.setPgLanguage("C#"); + System.out.println(pg2.getName() + "ใ•ใ‚“ใฏ" + pg2.getPgLanguage() + "ใ‚’ไฝฟใ†ใ“ใจใŒใงใใพใ™"); + } + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Food.java b/java-learning/src/jp/co/jid/extendsSample/Food.java new file mode 100644 index 0000000..95c2556 --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Food.java @@ -0,0 +1,5 @@ +package jp.co.jid.extendsSample; + +public class Food { + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Human.java b/java-learning/src/jp/co/jid/extendsSample/Human.java new file mode 100644 index 0000000..246500b --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Human.java @@ -0,0 +1,35 @@ +package jp.co.jid.extendsSample; + +import java.util.Date; + +public class Human { + private String name; + private int sex; + private Date birthday; + + public void walk() {} + public void unr() {} + public void eat(Food food) { + System.out.println("ๅฎถๆ—ๅ›ฃใ‚‰ใ‚“ใงๅ††ๅ“ใ‚’ๅ›ฒใ‚“ใงใ”้ฃฏใ‚’้ฃŸในใ‚‹"); + } + public void sleep() {} + + public String getName() { + return name; + } + public void setName(String name) { + this.name = name; + } + public int getSex() { + return sex; + } + public void setSex(int sex) { + this.sex = sex; + } + public Date getBirthday() { + return birthday; + } + public void setBirthday(Date birthday) { + this.birthday = birthday; + } +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Programmer.java b/java-learning/src/jp/co/jid/extendsSample/Programmer.java new file mode 100644 index 0000000..58bb117 --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Programmer.java @@ -0,0 +1,21 @@ +package jp.co.jid.extendsSample; + +public class Programmer extends Human { + private String pgLanguage; + + public void programing() {} + + @Override + public void eat(Food food) { + super.eat(food); + System.out.println("PCใซๅ‘ใ‹ใฃใฆไป•ไบ‹ใ‚’ใ—ใชใŒใ‚‰ใ”้ฃฏใ‚’้ฃŸในใ‚‹"); + } + + public String getPgLanguage() { + return pgLanguage; + } + + public void setPgLanguage(String pgLanguage) { + this.pgLanguage = pgLanguage; + } +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Programmer2.java b/java-learning/src/jp/co/jid/extendsSample/Programmer2.java new file mode 100644 index 0000000..2b477fe --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Programmer2.java @@ -0,0 +1,41 @@ +package jp.co.jid.extendsSample; + +import java.util.Date; + +public class Programmer2 { + private String name; + private int sex; + private Date birthday; + private String pgLanguage; + + public void walk() {} + public void unr() {} + public void eat(Food food) {} + public void sleep() {} + public void programing() {} + + public String getName() { + return name; + } + public void setName(String name) { + this.name = name; + } + public int getSex() { + return sex; + } + public void setSex(int sex) { + this.sex = sex; + } + public Date getBirthday() { + return birthday; + } + public void setBirthday(Date birthday) { + this.birthday = birthday; + } + public String getPgLanguage() { + return pgLanguage; + } + public void setPgLanguage(String pgLanguage) { + this.pgLanguage = pgLanguage; + } +} diff --git a/java-learning/src/jp/co/jid/interfaceSample/Calculation.java b/java-learning/src/jp/co/jid/interfaceSample/Calculation.java new file mode 100644 index 0000000..983ca36 --- /dev/null +++ b/java-learning/src/jp/co/jid/interfaceSample/Calculation.java @@ -0,0 +1,7 @@ +package jp.co.jid.interfaceSample; + +public interface Calculation { + default public int calc(int x, int y) { + return x + y; + } +} diff --git a/java-learning/src/jp/co/jid/interfaceSample/InterfaceSample.java b/java-learning/src/jp/co/jid/interfaceSample/InterfaceSample.java new file mode 100644 index 0000000..a51f835 --- /dev/null +++ b/java-learning/src/jp/co/jid/interfaceSample/InterfaceSample.java @@ -0,0 +1,15 @@ +package jp.co.jid.interfaceSample; + +public class InterfaceSample { + + public static void main(String[] args) { + Plus plus = new Plus(); + System.out.println(plus.calc(5, 2)); + Minus minus = new Minus(); + System.out.println(minus.calc(5, 2)); + + int[] nums = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + System.out.println(MathUtil.sum(nums)); + } + +} diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class new file mode 100644 index 0000000..be31229 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class new file mode 100644 index 0000000..4aaa734 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class new file mode 100644 index 0000000..c81ead4 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample4.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample4.class new file mode 100644 index 0000000..e3a5d2f --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample4.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample5.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample5.class new file mode 100644 index 0000000..6f8c4e6 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample5.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample6.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample6.class new file mode 100644 index 0000000..bdedfd0 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample6.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/classAndMethod/Calculation.class b/java-learning/bin/jp/co/jid/classAndMethod/Calculation.class index e8c458e..f7c5ffc 100644 --- a/java-learning/bin/jp/co/jid/classAndMethod/Calculation.class +++ b/java-learning/bin/jp/co/jid/classAndMethod/Calculation.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class b/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class index b682f8f..4287ec1 100644 --- a/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class +++ b/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/exceptionSample/ExceptionSample.class b/java-learning/bin/jp/co/jid/exceptionSample/ExceptionSample.class new file mode 100644 index 0000000..6069b95 --- /dev/null +++ b/java-learning/bin/jp/co/jid/exceptionSample/ExceptionSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/ExtendsSample.class b/java-learning/bin/jp/co/jid/extendsSample/ExtendsSample.class new file mode 100644 index 0000000..971dbb9 --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/ExtendsSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/Food.class b/java-learning/bin/jp/co/jid/extendsSample/Food.class new file mode 100644 index 0000000..7cc9c1a --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/Food.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/Human.class b/java-learning/bin/jp/co/jid/extendsSample/Human.class new file mode 100644 index 0000000..a2a1c95 --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/Human.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/Programmer.class b/java-learning/bin/jp/co/jid/extendsSample/Programmer.class new file mode 100644 index 0000000..f91d072 --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/Programmer.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/Programmer2.class b/java-learning/bin/jp/co/jid/extendsSample/Programmer2.class new file mode 100644 index 0000000..f43b997 --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/Programmer2.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/Calculation.class b/java-learning/bin/jp/co/jid/interfaceSample/Calculation.class new file mode 100644 index 0000000..3f2f543 --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/Calculation.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/InterfaceSample.class b/java-learning/bin/jp/co/jid/interfaceSample/InterfaceSample.class new file mode 100644 index 0000000..82a05e3 --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/InterfaceSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/MathUtil.class b/java-learning/bin/jp/co/jid/interfaceSample/MathUtil.class new file mode 100644 index 0000000..833d740 --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/MathUtil.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/Minus.class b/java-learning/bin/jp/co/jid/interfaceSample/Minus.class new file mode 100644 index 0000000..119f3b8 --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/Minus.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/Plus.class b/java-learning/bin/jp/co/jid/interfaceSample/Plus.class new file mode 100644 index 0000000..fc4e66b --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/Plus.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class b/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class new file mode 100644 index 0000000..f78b826 --- /dev/null +++ b/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class b/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class new file mode 100644 index 0000000..12c1935 --- /dev/null +++ b/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/stringSample/stringSample.class b/java-learning/bin/jp/co/jid/stringSample/stringSample.class index b913694..ec6a0ba 100644 --- a/java-learning/bin/jp/co/jid/stringSample/stringSample.class +++ b/java-learning/bin/jp/co/jid/stringSample/stringSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class new file mode 100644 index 0000000..ead71b8 --- /dev/null +++ b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class Binary files differ diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample1.java b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java new file mode 100644 index 0000000..efb748b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample1 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray[2]); + intArray[2] = 7; + System.out.println(intArray[2]); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample2.java b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java new file mode 100644 index 0000000..c9c24b3 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java @@ -0,0 +1,10 @@ +package jp.co.jid.arraySample; + +public class ArraySample2 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray.length); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample3.java b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java new file mode 100644 index 0000000..02c3683 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample3 { + + public static void main(String[] args) { + int array[][] = {{11, 12, 13}, {21, 22, 23}}; + for (int[] row : array) { + for (int element : row) { + System.out.print(element + "\t"); + } + System.out.print("\n"); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample4.java b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java new file mode 100644 index 0000000..7a18a4b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample4 { + + public static void main(String[] args) { + int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for (int element : array) { + System.out.println(element); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample5.java b/java-learning/src/jp/co/jid/arraySample/ArraySample5.java new file mode 100644 index 0000000..3d980b0 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample5.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample5 { + + public static void main(String[] args) { + int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for (int index = 0; index < array.length; index++) { + array[index] *= 2; + } + for (int element : array) { + System.out.println(element); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample6.java b/java-learning/src/jp/co/jid/arraySample/ArraySample6.java new file mode 100644 index 0000000..3f2da81 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample6.java @@ -0,0 +1,14 @@ +package jp.co.jid.arraySample; + +public class ArraySample6 { + + public static void main(String[] args) { + int array[][] = {{11, 12, 13}, {21, 22, 23}}; + for (int i = 0; i < 2; i++) { + for (int j = 0; j < 3; j++) { + System.out.println(array[i][j]); + } + } + } + +} diff --git a/java-learning/src/jp/co/jid/classAndMethod/Calculation.java b/java-learning/src/jp/co/jid/classAndMethod/Calculation.java index 32964dc..923e482 100644 --- a/java-learning/src/jp/co/jid/classAndMethod/Calculation.java +++ b/java-learning/src/jp/co/jid/classAndMethod/Calculation.java @@ -11,6 +11,15 @@ return num1 + num2; } + public int plus(int... nums) { + System.out.println("ๅฏๅค‰้•ทๅผ•ๆ•ฐใฎๅˆ่จˆๅ€คใงใ™"); + int sum = 0; + for (int num : nums) { + sum += num; + } + return sum; + } + public int multiple(int num1, int num2) { int res = 0; for (int i = 0; i < num2; i++) { diff --git a/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java b/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java index ba5f4fb..7e386ee 100644 --- a/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java +++ b/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java @@ -3,15 +3,18 @@ public class ClassAndMethod { public static void main(String[] args) { -// Human human1 = new Human(); -// human1.printName(); -// Human human2 = new Human("็”ฐไธญ็ด‹ๆฌก้ƒŽ"); -// human2.printName(); + Human human1 = new Human(); + human1.printName(); + Human human2 = new Human("็”ฐไธญ็ด‹ๆฌก้ƒŽ"); + human2.printName(); Calculation calc = new Calculation(); System.out.println(calc.plus(2, 3)); -// System.out.println(calc.plus(2.0, 3.0)); -// System.out.println(calc.multiple(2, 3)); + System.out.println(calc.plus(2.0, 3.0)); + System.out.println(calc.multiple(2, 3)); + System.out.println(calc.plus(1, 2, 3)); + System.out.println(calc.plus(1, 2, 3, 4, 5)); + System.out.println(calc.plus(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)); } } diff --git a/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java b/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java new file mode 100644 index 0000000..1dd08a4 --- /dev/null +++ b/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java @@ -0,0 +1,31 @@ +package jp.co.jid.exceptionSample; + +import java.util.ArrayList; + +public class ExceptionSample { + + public static void main(String[] args) { + ExceptionSample sample = new ExceptionSample(); + ArrayList list = null; + sample.nullPointerExceptionSample(list); + sample.classNotFoundExceptiopnSample("TestClass"); + sample.numberFormatExceptionSample("ABCDE"); + } + + public void nullPointerExceptionSample(ArrayList list) { + list.size(); + } + + public void classNotFoundExceptiopnSample(String className) { + try { + Class.forName(className).newInstance(); + } catch (InstantiationException | IllegalAccessException | ClassNotFoundException e) { + e.printStackTrace(); + } + } + + public void numberFormatExceptionSample(String numStr) { + Integer.valueOf(numStr); + } + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java b/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java new file mode 100644 index 0000000..2fe0d4e --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java @@ -0,0 +1,18 @@ +package jp.co.jid.extendsSample; + +public class ExtendsSample { + + public static void main(String[] args) { + Programmer pg1 = new Programmer(); + pg1.setName("ๅฑฑ็”ฐๅคช้ƒŽ"); + pg1.setPgLanguage("Java"); + System.out.println(pg1.getName() + "ใ•ใ‚“ใฏ" + pg1.getPgLanguage() + "ใ‚’ไฝฟใ†ใ“ใจใŒใงใใพใ™"); + pg1.eat(new Food()); + + Programmer2 pg2 = new Programmer2(); + pg2.setName("้ˆดๆœจ่Šฑๅญ"); + pg2.setPgLanguage("C#"); + System.out.println(pg2.getName() + "ใ•ใ‚“ใฏ" + pg2.getPgLanguage() + "ใ‚’ไฝฟใ†ใ“ใจใŒใงใใพใ™"); + } + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Food.java b/java-learning/src/jp/co/jid/extendsSample/Food.java new file mode 100644 index 0000000..95c2556 --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Food.java @@ -0,0 +1,5 @@ +package jp.co.jid.extendsSample; + +public class Food { + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Human.java b/java-learning/src/jp/co/jid/extendsSample/Human.java new file mode 100644 index 0000000..246500b --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Human.java @@ -0,0 +1,35 @@ +package jp.co.jid.extendsSample; + +import java.util.Date; + +public class Human { + private String name; + private int sex; + private Date birthday; + + public void walk() {} + public void unr() {} + public void eat(Food food) { + System.out.println("ๅฎถๆ—ๅ›ฃใ‚‰ใ‚“ใงๅ††ๅ“ใ‚’ๅ›ฒใ‚“ใงใ”้ฃฏใ‚’้ฃŸในใ‚‹"); + } + public void sleep() {} + + public String getName() { + return name; + } + public void setName(String name) { + this.name = name; + } + public int getSex() { + return sex; + } + public void setSex(int sex) { + this.sex = sex; + } + public Date getBirthday() { + return birthday; + } + public void setBirthday(Date birthday) { + this.birthday = birthday; + } +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Programmer.java b/java-learning/src/jp/co/jid/extendsSample/Programmer.java new file mode 100644 index 0000000..58bb117 --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Programmer.java @@ -0,0 +1,21 @@ +package jp.co.jid.extendsSample; + +public class Programmer extends Human { + private String pgLanguage; + + public void programing() {} + + @Override + public void eat(Food food) { + super.eat(food); + System.out.println("PCใซๅ‘ใ‹ใฃใฆไป•ไบ‹ใ‚’ใ—ใชใŒใ‚‰ใ”้ฃฏใ‚’้ฃŸในใ‚‹"); + } + + public String getPgLanguage() { + return pgLanguage; + } + + public void setPgLanguage(String pgLanguage) { + this.pgLanguage = pgLanguage; + } +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Programmer2.java b/java-learning/src/jp/co/jid/extendsSample/Programmer2.java new file mode 100644 index 0000000..2b477fe --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Programmer2.java @@ -0,0 +1,41 @@ +package jp.co.jid.extendsSample; + +import java.util.Date; + +public class Programmer2 { + private String name; + private int sex; + private Date birthday; + private String pgLanguage; + + public void walk() {} + public void unr() {} + public void eat(Food food) {} + public void sleep() {} + public void programing() {} + + public String getName() { + return name; + } + public void setName(String name) { + this.name = name; + } + public int getSex() { + return sex; + } + public void setSex(int sex) { + this.sex = sex; + } + public Date getBirthday() { + return birthday; + } + public void setBirthday(Date birthday) { + this.birthday = birthday; + } + public String getPgLanguage() { + return pgLanguage; + } + public void setPgLanguage(String pgLanguage) { + this.pgLanguage = pgLanguage; + } +} diff --git a/java-learning/src/jp/co/jid/interfaceSample/Calculation.java b/java-learning/src/jp/co/jid/interfaceSample/Calculation.java new file mode 100644 index 0000000..983ca36 --- /dev/null +++ b/java-learning/src/jp/co/jid/interfaceSample/Calculation.java @@ -0,0 +1,7 @@ +package jp.co.jid.interfaceSample; + +public interface Calculation { + default public int calc(int x, int y) { + return x + y; + } +} diff --git a/java-learning/src/jp/co/jid/interfaceSample/InterfaceSample.java b/java-learning/src/jp/co/jid/interfaceSample/InterfaceSample.java new file mode 100644 index 0000000..a51f835 --- /dev/null +++ b/java-learning/src/jp/co/jid/interfaceSample/InterfaceSample.java @@ -0,0 +1,15 @@ +package jp.co.jid.interfaceSample; + +public class InterfaceSample { + + public static void main(String[] args) { + Plus plus = new Plus(); + System.out.println(plus.calc(5, 2)); + Minus minus = new Minus(); + System.out.println(minus.calc(5, 2)); + + int[] nums = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + System.out.println(MathUtil.sum(nums)); + } + +} diff --git a/java-learning/src/jp/co/jid/interfaceSample/MathUtil.java b/java-learning/src/jp/co/jid/interfaceSample/MathUtil.java new file mode 100644 index 0000000..61dfc7c --- /dev/null +++ b/java-learning/src/jp/co/jid/interfaceSample/MathUtil.java @@ -0,0 +1,11 @@ +package jp.co.jid.interfaceSample; + +public interface MathUtil { + public static int sum(int... nums) { + int sum = 0; + for (int num : nums) { + sum += num; + } + return sum; + } +} diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class new file mode 100644 index 0000000..be31229 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class new file mode 100644 index 0000000..4aaa734 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class new file mode 100644 index 0000000..c81ead4 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample4.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample4.class new file mode 100644 index 0000000..e3a5d2f --- /dev/null +++ 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a/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class b/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class index b682f8f..4287ec1 100644 --- a/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class +++ b/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/exceptionSample/ExceptionSample.class b/java-learning/bin/jp/co/jid/exceptionSample/ExceptionSample.class new file mode 100644 index 0000000..6069b95 --- /dev/null +++ b/java-learning/bin/jp/co/jid/exceptionSample/ExceptionSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/ExtendsSample.class b/java-learning/bin/jp/co/jid/extendsSample/ExtendsSample.class new file mode 100644 index 0000000..971dbb9 --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/ExtendsSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/Food.class b/java-learning/bin/jp/co/jid/extendsSample/Food.class new file mode 100644 index 0000000..7cc9c1a --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/Food.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/Human.class b/java-learning/bin/jp/co/jid/extendsSample/Human.class new file mode 100644 index 0000000..a2a1c95 --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/Human.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/Programmer.class b/java-learning/bin/jp/co/jid/extendsSample/Programmer.class new file mode 100644 index 0000000..f91d072 --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/Programmer.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/Programmer2.class b/java-learning/bin/jp/co/jid/extendsSample/Programmer2.class new file mode 100644 index 0000000..f43b997 --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/Programmer2.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/Calculation.class b/java-learning/bin/jp/co/jid/interfaceSample/Calculation.class new file mode 100644 index 0000000..3f2f543 --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/Calculation.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/InterfaceSample.class b/java-learning/bin/jp/co/jid/interfaceSample/InterfaceSample.class new file mode 100644 index 0000000..82a05e3 --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/InterfaceSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/MathUtil.class b/java-learning/bin/jp/co/jid/interfaceSample/MathUtil.class new file mode 100644 index 0000000..833d740 --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/MathUtil.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/Minus.class b/java-learning/bin/jp/co/jid/interfaceSample/Minus.class new file mode 100644 index 0000000..119f3b8 --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/Minus.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/Plus.class b/java-learning/bin/jp/co/jid/interfaceSample/Plus.class new file mode 100644 index 0000000..fc4e66b --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/Plus.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class b/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class new file mode 100644 index 0000000..f78b826 --- /dev/null +++ b/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class b/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class new file mode 100644 index 0000000..12c1935 --- /dev/null +++ b/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/stringSample/stringSample.class b/java-learning/bin/jp/co/jid/stringSample/stringSample.class index b913694..ec6a0ba 100644 --- a/java-learning/bin/jp/co/jid/stringSample/stringSample.class +++ b/java-learning/bin/jp/co/jid/stringSample/stringSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class new file mode 100644 index 0000000..ead71b8 --- /dev/null +++ b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class Binary files differ diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample1.java b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java new file mode 100644 index 0000000..efb748b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample1 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray[2]); + intArray[2] = 7; + System.out.println(intArray[2]); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample2.java b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java new file mode 100644 index 0000000..c9c24b3 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java @@ -0,0 +1,10 @@ +package jp.co.jid.arraySample; + +public class ArraySample2 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray.length); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample3.java b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java new file mode 100644 index 0000000..02c3683 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample3 { + + public static void main(String[] args) { + int array[][] = {{11, 12, 13}, {21, 22, 23}}; + for (int[] row : array) { + for (int element : row) { + System.out.print(element + "\t"); + } + System.out.print("\n"); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample4.java b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java new file mode 100644 index 0000000..7a18a4b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample4 { + + public static void main(String[] args) { + int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for (int element : array) { + System.out.println(element); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample5.java b/java-learning/src/jp/co/jid/arraySample/ArraySample5.java new file mode 100644 index 0000000..3d980b0 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample5.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample5 { + + public static void main(String[] args) { + int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for (int index = 0; index < array.length; index++) { + array[index] *= 2; + } + for (int element : array) { + System.out.println(element); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample6.java b/java-learning/src/jp/co/jid/arraySample/ArraySample6.java new file mode 100644 index 0000000..3f2da81 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample6.java @@ -0,0 +1,14 @@ +package jp.co.jid.arraySample; + +public class ArraySample6 { + + public static void main(String[] args) { + int array[][] = {{11, 12, 13}, {21, 22, 23}}; + for (int i = 0; i < 2; i++) { + for (int j = 0; j < 3; j++) { + System.out.println(array[i][j]); + } + } + } + +} diff --git a/java-learning/src/jp/co/jid/classAndMethod/Calculation.java b/java-learning/src/jp/co/jid/classAndMethod/Calculation.java index 32964dc..923e482 100644 --- a/java-learning/src/jp/co/jid/classAndMethod/Calculation.java +++ b/java-learning/src/jp/co/jid/classAndMethod/Calculation.java @@ -11,6 +11,15 @@ return num1 + num2; } + public int plus(int... nums) { + System.out.println("ๅฏๅค‰้•ทๅผ•ๆ•ฐใฎๅˆ่จˆๅ€คใงใ™"); + int sum = 0; + for (int num : nums) { + sum += num; + } + return sum; + } + public int multiple(int num1, int num2) { int res = 0; for (int i = 0; i < num2; i++) { diff --git a/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java b/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java index ba5f4fb..7e386ee 100644 --- a/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java +++ b/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java @@ -3,15 +3,18 @@ public class ClassAndMethod { public static void main(String[] args) { -// Human human1 = new Human(); -// human1.printName(); -// Human human2 = new Human("็”ฐไธญ็ด‹ๆฌก้ƒŽ"); -// human2.printName(); + Human human1 = new Human(); + human1.printName(); + Human human2 = new Human("็”ฐไธญ็ด‹ๆฌก้ƒŽ"); + human2.printName(); Calculation calc = new Calculation(); System.out.println(calc.plus(2, 3)); -// System.out.println(calc.plus(2.0, 3.0)); -// System.out.println(calc.multiple(2, 3)); + System.out.println(calc.plus(2.0, 3.0)); + System.out.println(calc.multiple(2, 3)); + System.out.println(calc.plus(1, 2, 3)); + System.out.println(calc.plus(1, 2, 3, 4, 5)); + System.out.println(calc.plus(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)); } } diff --git a/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java b/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java new file mode 100644 index 0000000..1dd08a4 --- /dev/null +++ b/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java @@ -0,0 +1,31 @@ +package jp.co.jid.exceptionSample; + +import java.util.ArrayList; + +public class ExceptionSample { + + public static void main(String[] args) { + ExceptionSample sample = new ExceptionSample(); + ArrayList list = null; + sample.nullPointerExceptionSample(list); + sample.classNotFoundExceptiopnSample("TestClass"); + sample.numberFormatExceptionSample("ABCDE"); + } + + public void nullPointerExceptionSample(ArrayList list) { + list.size(); + } + + public void classNotFoundExceptiopnSample(String className) { + try { + Class.forName(className).newInstance(); + } catch (InstantiationException | IllegalAccessException | ClassNotFoundException e) { + e.printStackTrace(); + } + } + + public void numberFormatExceptionSample(String numStr) { + Integer.valueOf(numStr); + } + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java b/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java new file mode 100644 index 0000000..2fe0d4e --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java @@ -0,0 +1,18 @@ +package jp.co.jid.extendsSample; + +public class ExtendsSample { + + public static void main(String[] args) { + Programmer pg1 = new Programmer(); + pg1.setName("ๅฑฑ็”ฐๅคช้ƒŽ"); + pg1.setPgLanguage("Java"); + System.out.println(pg1.getName() + "ใ•ใ‚“ใฏ" + pg1.getPgLanguage() + "ใ‚’ไฝฟใ†ใ“ใจใŒใงใใพใ™"); + pg1.eat(new Food()); + + Programmer2 pg2 = new Programmer2(); + pg2.setName("้ˆดๆœจ่Šฑๅญ"); + pg2.setPgLanguage("C#"); + System.out.println(pg2.getName() + "ใ•ใ‚“ใฏ" + pg2.getPgLanguage() + "ใ‚’ไฝฟใ†ใ“ใจใŒใงใใพใ™"); + } + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Food.java b/java-learning/src/jp/co/jid/extendsSample/Food.java new file mode 100644 index 0000000..95c2556 --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Food.java @@ -0,0 +1,5 @@ +package jp.co.jid.extendsSample; + +public class Food { + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Human.java b/java-learning/src/jp/co/jid/extendsSample/Human.java new file mode 100644 index 0000000..246500b --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Human.java @@ -0,0 +1,35 @@ +package jp.co.jid.extendsSample; + +import java.util.Date; + +public class Human { + private String name; + private int sex; + private Date birthday; + + public void walk() {} + public void unr() {} + public void eat(Food food) { + System.out.println("ๅฎถๆ—ๅ›ฃใ‚‰ใ‚“ใงๅ††ๅ“ใ‚’ๅ›ฒใ‚“ใงใ”้ฃฏใ‚’้ฃŸในใ‚‹"); + } + public void sleep() {} + + public String getName() { + return name; + } + public void setName(String name) { + this.name = name; + } + public int getSex() { + return sex; + } + public void setSex(int sex) { + this.sex = sex; + } + public Date getBirthday() { + return birthday; + } + public void setBirthday(Date birthday) { + this.birthday = birthday; + } +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Programmer.java b/java-learning/src/jp/co/jid/extendsSample/Programmer.java new file mode 100644 index 0000000..58bb117 --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Programmer.java @@ -0,0 +1,21 @@ +package jp.co.jid.extendsSample; + +public class Programmer extends Human { + private String pgLanguage; + + public void programing() {} + + @Override + public void eat(Food food) { + super.eat(food); + System.out.println("PCใซๅ‘ใ‹ใฃใฆไป•ไบ‹ใ‚’ใ—ใชใŒใ‚‰ใ”้ฃฏใ‚’้ฃŸในใ‚‹"); + } + + public String getPgLanguage() { + return pgLanguage; + } + + public void setPgLanguage(String pgLanguage) { + this.pgLanguage = pgLanguage; + } +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Programmer2.java b/java-learning/src/jp/co/jid/extendsSample/Programmer2.java new file mode 100644 index 0000000..2b477fe --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Programmer2.java @@ -0,0 +1,41 @@ +package jp.co.jid.extendsSample; + +import java.util.Date; + +public class Programmer2 { + private String name; + private int sex; + private Date birthday; + private String pgLanguage; + + public void walk() {} + public void unr() {} + public void eat(Food food) {} + public void sleep() {} + public void programing() {} + + public String getName() { + return name; + } + public void setName(String name) { + this.name = name; + } + public int getSex() { + return sex; + } + public void setSex(int sex) { + this.sex = sex; + } + public Date getBirthday() { + return birthday; + } + public void setBirthday(Date birthday) { + this.birthday = birthday; + } + public String getPgLanguage() { + return pgLanguage; + } + public void setPgLanguage(String pgLanguage) { + this.pgLanguage = pgLanguage; + } +} diff --git a/java-learning/src/jp/co/jid/interfaceSample/Calculation.java b/java-learning/src/jp/co/jid/interfaceSample/Calculation.java new file mode 100644 index 0000000..983ca36 --- /dev/null +++ b/java-learning/src/jp/co/jid/interfaceSample/Calculation.java @@ -0,0 +1,7 @@ +package jp.co.jid.interfaceSample; + +public interface Calculation { + default public int calc(int x, int y) { + return x + y; + } +} diff --git a/java-learning/src/jp/co/jid/interfaceSample/InterfaceSample.java b/java-learning/src/jp/co/jid/interfaceSample/InterfaceSample.java new file mode 100644 index 0000000..a51f835 --- /dev/null +++ b/java-learning/src/jp/co/jid/interfaceSample/InterfaceSample.java @@ -0,0 +1,15 @@ +package jp.co.jid.interfaceSample; + +public class InterfaceSample { + + public static void main(String[] args) { + Plus plus = new Plus(); + System.out.println(plus.calc(5, 2)); + Minus minus = new Minus(); + System.out.println(minus.calc(5, 2)); + + int[] nums = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + System.out.println(MathUtil.sum(nums)); + } + +} diff --git a/java-learning/src/jp/co/jid/interfaceSample/MathUtil.java b/java-learning/src/jp/co/jid/interfaceSample/MathUtil.java new file mode 100644 index 0000000..61dfc7c --- /dev/null +++ b/java-learning/src/jp/co/jid/interfaceSample/MathUtil.java @@ -0,0 +1,11 @@ +package jp.co.jid.interfaceSample; + +public interface MathUtil { + public static int sum(int... nums) { + int sum = 0; + for (int num : nums) { + sum += num; + } + return sum; + } +} diff --git a/java-learning/src/jp/co/jid/interfaceSample/Minus.java b/java-learning/src/jp/co/jid/interfaceSample/Minus.java new file mode 100644 index 0000000..aef30ed --- /dev/null +++ b/java-learning/src/jp/co/jid/interfaceSample/Minus.java @@ -0,0 +1,5 @@ +package jp.co.jid.interfaceSample; + +public class Minus implements Calculation { + +} diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class new file mode 100644 index 0000000..be31229 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class new file mode 100644 index 0000000..4aaa734 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class new file mode 100644 index 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a/java-learning/src/jp/co/jid/arraySample/ArraySample1.java b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java new file mode 100644 index 0000000..efb748b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample1 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray[2]); + intArray[2] = 7; + System.out.println(intArray[2]); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample2.java b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java new file mode 100644 index 0000000..c9c24b3 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java @@ -0,0 +1,10 @@ +package jp.co.jid.arraySample; + +public class ArraySample2 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray.length); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample3.java b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java new file mode 100644 index 0000000..02c3683 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample3 { + + public static void main(String[] args) { + int array[][] = {{11, 12, 13}, {21, 22, 23}}; + for (int[] row : array) { + for (int element : row) { + System.out.print(element + "\t"); + } + System.out.print("\n"); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample4.java b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java new file mode 100644 index 0000000..7a18a4b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample4 { + + public static void main(String[] args) { + int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for (int element : array) { + System.out.println(element); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample5.java b/java-learning/src/jp/co/jid/arraySample/ArraySample5.java new file mode 100644 index 0000000..3d980b0 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample5.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample5 { + + public static void main(String[] args) { + int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for (int index = 0; index < array.length; index++) { + array[index] *= 2; + } + for (int element : array) { + System.out.println(element); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample6.java b/java-learning/src/jp/co/jid/arraySample/ArraySample6.java new file mode 100644 index 0000000..3f2da81 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample6.java @@ -0,0 +1,14 @@ +package jp.co.jid.arraySample; + +public class ArraySample6 { + + public static void main(String[] args) { + int array[][] = {{11, 12, 13}, {21, 22, 23}}; + for (int i = 0; i < 2; i++) { + for (int j = 0; j < 3; j++) { + System.out.println(array[i][j]); + } + } + } + +} diff --git a/java-learning/src/jp/co/jid/classAndMethod/Calculation.java b/java-learning/src/jp/co/jid/classAndMethod/Calculation.java index 32964dc..923e482 100644 --- a/java-learning/src/jp/co/jid/classAndMethod/Calculation.java +++ b/java-learning/src/jp/co/jid/classAndMethod/Calculation.java @@ -11,6 +11,15 @@ return num1 + num2; } + public int plus(int... nums) { + System.out.println("ๅฏๅค‰้•ทๅผ•ๆ•ฐใฎๅˆ่จˆๅ€คใงใ™"); + int sum = 0; + for (int num : nums) { + sum += num; + } + return sum; + } + public int multiple(int num1, int num2) { int res = 0; for (int i = 0; i < num2; i++) { diff --git a/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java b/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java index ba5f4fb..7e386ee 100644 --- a/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java +++ b/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java @@ -3,15 +3,18 @@ public class ClassAndMethod { public static void main(String[] args) { -// Human human1 = new Human(); -// human1.printName(); -// Human human2 = new Human("็”ฐไธญ็ด‹ๆฌก้ƒŽ"); -// human2.printName(); + Human human1 = new Human(); + human1.printName(); + Human human2 = new Human("็”ฐไธญ็ด‹ๆฌก้ƒŽ"); + human2.printName(); Calculation calc = new Calculation(); System.out.println(calc.plus(2, 3)); -// System.out.println(calc.plus(2.0, 3.0)); -// System.out.println(calc.multiple(2, 3)); + System.out.println(calc.plus(2.0, 3.0)); + System.out.println(calc.multiple(2, 3)); + System.out.println(calc.plus(1, 2, 3)); + System.out.println(calc.plus(1, 2, 3, 4, 5)); + System.out.println(calc.plus(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)); } } diff --git a/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java b/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java new file mode 100644 index 0000000..1dd08a4 --- /dev/null +++ b/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java @@ -0,0 +1,31 @@ +package jp.co.jid.exceptionSample; + +import java.util.ArrayList; + +public class ExceptionSample { + + public static void main(String[] args) { + ExceptionSample sample = new ExceptionSample(); + ArrayList list = null; + sample.nullPointerExceptionSample(list); + sample.classNotFoundExceptiopnSample("TestClass"); + sample.numberFormatExceptionSample("ABCDE"); + } + + public void nullPointerExceptionSample(ArrayList list) { + list.size(); + } + + public void classNotFoundExceptiopnSample(String className) { + try { + Class.forName(className).newInstance(); + } catch (InstantiationException | IllegalAccessException | ClassNotFoundException e) { + e.printStackTrace(); + } + } + + public void numberFormatExceptionSample(String numStr) { + Integer.valueOf(numStr); + } + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java b/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java new file mode 100644 index 0000000..2fe0d4e --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java @@ -0,0 +1,18 @@ +package jp.co.jid.extendsSample; + +public class ExtendsSample { + + public static void main(String[] args) { + Programmer pg1 = new Programmer(); + pg1.setName("ๅฑฑ็”ฐๅคช้ƒŽ"); + pg1.setPgLanguage("Java"); + System.out.println(pg1.getName() + "ใ•ใ‚“ใฏ" + pg1.getPgLanguage() + "ใ‚’ไฝฟใ†ใ“ใจใŒใงใใพใ™"); + pg1.eat(new Food()); + + Programmer2 pg2 = new Programmer2(); + pg2.setName("้ˆดๆœจ่Šฑๅญ"); + pg2.setPgLanguage("C#"); + System.out.println(pg2.getName() + "ใ•ใ‚“ใฏ" + pg2.getPgLanguage() + "ใ‚’ไฝฟใ†ใ“ใจใŒใงใใพใ™"); + } + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Food.java b/java-learning/src/jp/co/jid/extendsSample/Food.java new file mode 100644 index 0000000..95c2556 --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Food.java @@ -0,0 +1,5 @@ +package jp.co.jid.extendsSample; + +public class Food { + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Human.java b/java-learning/src/jp/co/jid/extendsSample/Human.java new file mode 100644 index 0000000..246500b --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Human.java @@ -0,0 +1,35 @@ +package jp.co.jid.extendsSample; + +import java.util.Date; + +public class Human { + private String name; + private int sex; + private Date birthday; + + public void walk() {} + public void unr() {} + public void eat(Food food) { + System.out.println("ๅฎถๆ—ๅ›ฃใ‚‰ใ‚“ใงๅ††ๅ“ใ‚’ๅ›ฒใ‚“ใงใ”้ฃฏใ‚’้ฃŸในใ‚‹"); + } + public void sleep() {} + + public String getName() { + return name; + } + public void setName(String name) { + this.name = name; + } + public int getSex() { + return sex; + } + public void setSex(int sex) { + this.sex = sex; + } + public Date getBirthday() { + return birthday; + } + public void setBirthday(Date birthday) { + this.birthday = birthday; + } +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Programmer.java b/java-learning/src/jp/co/jid/extendsSample/Programmer.java new file mode 100644 index 0000000..58bb117 --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Programmer.java @@ -0,0 +1,21 @@ +package jp.co.jid.extendsSample; + +public class Programmer extends Human { + private String pgLanguage; + + public void programing() {} + + @Override + public void eat(Food food) { + super.eat(food); + System.out.println("PCใซๅ‘ใ‹ใฃใฆไป•ไบ‹ใ‚’ใ—ใชใŒใ‚‰ใ”้ฃฏใ‚’้ฃŸในใ‚‹"); + } + + public String getPgLanguage() { + return pgLanguage; + } + + public void setPgLanguage(String pgLanguage) { + this.pgLanguage = pgLanguage; + } +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Programmer2.java b/java-learning/src/jp/co/jid/extendsSample/Programmer2.java new file mode 100644 index 0000000..2b477fe --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Programmer2.java @@ -0,0 +1,41 @@ +package jp.co.jid.extendsSample; + +import java.util.Date; + +public class Programmer2 { + private String name; + private int sex; + private Date birthday; + private String pgLanguage; + + public void walk() {} + public void unr() {} + public void eat(Food food) {} + public void sleep() {} + public void programing() {} + + public String getName() { + return name; + } + public void setName(String name) { + this.name = name; + } + public int getSex() { + return sex; + } + public void setSex(int sex) { + this.sex = sex; + } + public Date getBirthday() { + return birthday; + } + public void setBirthday(Date birthday) { + this.birthday = birthday; + } + public String getPgLanguage() { + return pgLanguage; + } + public void setPgLanguage(String pgLanguage) { + this.pgLanguage = pgLanguage; + } +} diff --git a/java-learning/src/jp/co/jid/interfaceSample/Calculation.java b/java-learning/src/jp/co/jid/interfaceSample/Calculation.java new file mode 100644 index 0000000..983ca36 --- /dev/null +++ b/java-learning/src/jp/co/jid/interfaceSample/Calculation.java @@ -0,0 +1,7 @@ +package jp.co.jid.interfaceSample; + +public interface Calculation { + default public int calc(int x, int y) { + return x + y; + } +} diff --git a/java-learning/src/jp/co/jid/interfaceSample/InterfaceSample.java b/java-learning/src/jp/co/jid/interfaceSample/InterfaceSample.java new file mode 100644 index 0000000..a51f835 --- /dev/null +++ b/java-learning/src/jp/co/jid/interfaceSample/InterfaceSample.java @@ -0,0 +1,15 @@ +package jp.co.jid.interfaceSample; + +public class InterfaceSample { + + public static void main(String[] args) { + Plus plus = new Plus(); + System.out.println(plus.calc(5, 2)); + Minus minus = new Minus(); + System.out.println(minus.calc(5, 2)); + + int[] nums = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + System.out.println(MathUtil.sum(nums)); + } + +} diff --git a/java-learning/src/jp/co/jid/interfaceSample/MathUtil.java b/java-learning/src/jp/co/jid/interfaceSample/MathUtil.java new file mode 100644 index 0000000..61dfc7c --- /dev/null +++ b/java-learning/src/jp/co/jid/interfaceSample/MathUtil.java @@ -0,0 +1,11 @@ +package jp.co.jid.interfaceSample; + +public interface MathUtil { + public static int sum(int... nums) { + int sum = 0; + for (int num : nums) { + sum += num; + } + return sum; + } +} diff --git a/java-learning/src/jp/co/jid/interfaceSample/Minus.java b/java-learning/src/jp/co/jid/interfaceSample/Minus.java new file mode 100644 index 0000000..aef30ed --- /dev/null +++ b/java-learning/src/jp/co/jid/interfaceSample/Minus.java @@ -0,0 +1,5 @@ +package jp.co.jid.interfaceSample; + +public class Minus implements Calculation { + +} diff --git a/java-learning/src/jp/co/jid/interfaceSample/Plus.java b/java-learning/src/jp/co/jid/interfaceSample/Plus.java new file mode 100644 index 0000000..24a36f4 --- /dev/null +++ b/java-learning/src/jp/co/jid/interfaceSample/Plus.java @@ -0,0 +1,8 @@ +package jp.co.jid.interfaceSample; + +public class Plus implements Calculation { + @Override + public int calc(int x, int y) { + return x + y; + } +} diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class new file mode 100644 index 0000000..be31229 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class new file mode 100644 index 0000000..4aaa734 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class new file mode 100644 index 0000000..c81ead4 --- /dev/null +++ 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new file mode 100644 index 0000000..833d740 --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/MathUtil.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/Minus.class b/java-learning/bin/jp/co/jid/interfaceSample/Minus.class new file mode 100644 index 0000000..119f3b8 --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/Minus.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/Plus.class b/java-learning/bin/jp/co/jid/interfaceSample/Plus.class new file mode 100644 index 0000000..fc4e66b --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/Plus.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class b/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class new file mode 100644 index 0000000..f78b826 --- /dev/null +++ b/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class b/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class new file mode 100644 index 0000000..12c1935 --- /dev/null +++ b/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/stringSample/stringSample.class b/java-learning/bin/jp/co/jid/stringSample/stringSample.class index b913694..ec6a0ba 100644 --- a/java-learning/bin/jp/co/jid/stringSample/stringSample.class +++ b/java-learning/bin/jp/co/jid/stringSample/stringSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class new file mode 100644 index 0000000..ead71b8 --- /dev/null +++ b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class Binary files differ diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample1.java b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java new file mode 100644 index 0000000..efb748b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample1 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray[2]); + intArray[2] = 7; + System.out.println(intArray[2]); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample2.java b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java new file mode 100644 index 0000000..c9c24b3 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java @@ -0,0 +1,10 @@ +package jp.co.jid.arraySample; + +public class ArraySample2 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray.length); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample3.java b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java new file mode 100644 index 0000000..02c3683 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample3 { + + public static void main(String[] args) { + int array[][] = {{11, 12, 13}, {21, 22, 23}}; + for (int[] row : array) { + for (int element : row) { + System.out.print(element + "\t"); + } + System.out.print("\n"); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample4.java b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java new file mode 100644 index 0000000..7a18a4b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample4 { + + public static void main(String[] args) { + int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for (int element : array) { + System.out.println(element); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample5.java b/java-learning/src/jp/co/jid/arraySample/ArraySample5.java new file mode 100644 index 0000000..3d980b0 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample5.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample5 { + + public static void main(String[] args) { + int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for (int index = 0; index < array.length; index++) { + array[index] *= 2; + } + for (int element : array) { + System.out.println(element); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample6.java b/java-learning/src/jp/co/jid/arraySample/ArraySample6.java new file mode 100644 index 0000000..3f2da81 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample6.java @@ -0,0 +1,14 @@ +package jp.co.jid.arraySample; + +public class ArraySample6 { + + public static void main(String[] args) { + int array[][] = {{11, 12, 13}, {21, 22, 23}}; + for (int i = 0; i < 2; i++) { + for (int j = 0; j < 3; j++) { + System.out.println(array[i][j]); + } + } + } + +} diff --git a/java-learning/src/jp/co/jid/classAndMethod/Calculation.java b/java-learning/src/jp/co/jid/classAndMethod/Calculation.java index 32964dc..923e482 100644 --- a/java-learning/src/jp/co/jid/classAndMethod/Calculation.java +++ b/java-learning/src/jp/co/jid/classAndMethod/Calculation.java @@ -11,6 +11,15 @@ return num1 + num2; } + public int plus(int... nums) { + System.out.println("ๅฏๅค‰้•ทๅผ•ๆ•ฐใฎๅˆ่จˆๅ€คใงใ™"); + int sum = 0; + for (int num : nums) { + sum += num; + } + return sum; + } + public int multiple(int num1, int num2) { int res = 0; for (int i = 0; i < num2; i++) { diff --git a/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java b/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java index ba5f4fb..7e386ee 100644 --- a/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java +++ b/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java @@ -3,15 +3,18 @@ public class ClassAndMethod { public static void main(String[] args) { -// Human human1 = new Human(); -// human1.printName(); -// Human human2 = new Human("็”ฐไธญ็ด‹ๆฌก้ƒŽ"); -// human2.printName(); + Human human1 = new Human(); + human1.printName(); + Human human2 = new Human("็”ฐไธญ็ด‹ๆฌก้ƒŽ"); + human2.printName(); Calculation calc = new Calculation(); System.out.println(calc.plus(2, 3)); -// System.out.println(calc.plus(2.0, 3.0)); -// System.out.println(calc.multiple(2, 3)); + System.out.println(calc.plus(2.0, 3.0)); + System.out.println(calc.multiple(2, 3)); + System.out.println(calc.plus(1, 2, 3)); + System.out.println(calc.plus(1, 2, 3, 4, 5)); + System.out.println(calc.plus(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)); } } diff --git a/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java b/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java new file mode 100644 index 0000000..1dd08a4 --- /dev/null +++ b/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java @@ -0,0 +1,31 @@ +package jp.co.jid.exceptionSample; + +import java.util.ArrayList; + +public class ExceptionSample { + + public static void main(String[] args) { + ExceptionSample sample = new ExceptionSample(); + ArrayList list = null; + sample.nullPointerExceptionSample(list); + sample.classNotFoundExceptiopnSample("TestClass"); + sample.numberFormatExceptionSample("ABCDE"); + } + + public void nullPointerExceptionSample(ArrayList list) { + list.size(); + } + + public void classNotFoundExceptiopnSample(String className) { + try { + Class.forName(className).newInstance(); + } catch (InstantiationException | IllegalAccessException | ClassNotFoundException e) { + e.printStackTrace(); + } + } + + public void numberFormatExceptionSample(String numStr) { + Integer.valueOf(numStr); + } + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java b/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java new file mode 100644 index 0000000..2fe0d4e --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java @@ -0,0 +1,18 @@ +package jp.co.jid.extendsSample; + +public class ExtendsSample { + + public static void main(String[] args) { + Programmer pg1 = new Programmer(); + pg1.setName("ๅฑฑ็”ฐๅคช้ƒŽ"); + pg1.setPgLanguage("Java"); + System.out.println(pg1.getName() + "ใ•ใ‚“ใฏ" + pg1.getPgLanguage() + "ใ‚’ไฝฟใ†ใ“ใจใŒใงใใพใ™"); + pg1.eat(new Food()); + + Programmer2 pg2 = new Programmer2(); + pg2.setName("้ˆดๆœจ่Šฑๅญ"); + pg2.setPgLanguage("C#"); + System.out.println(pg2.getName() + "ใ•ใ‚“ใฏ" + pg2.getPgLanguage() + "ใ‚’ไฝฟใ†ใ“ใจใŒใงใใพใ™"); + } + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Food.java b/java-learning/src/jp/co/jid/extendsSample/Food.java new file mode 100644 index 0000000..95c2556 --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Food.java @@ -0,0 +1,5 @@ +package jp.co.jid.extendsSample; + +public class Food { + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Human.java b/java-learning/src/jp/co/jid/extendsSample/Human.java new file mode 100644 index 0000000..246500b --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Human.java @@ -0,0 +1,35 @@ +package jp.co.jid.extendsSample; + +import java.util.Date; + +public class Human { + private String name; + private int sex; + private Date birthday; + + public void walk() {} + public void unr() {} + public void eat(Food food) { + System.out.println("ๅฎถๆ—ๅ›ฃใ‚‰ใ‚“ใงๅ††ๅ“ใ‚’ๅ›ฒใ‚“ใงใ”้ฃฏใ‚’้ฃŸในใ‚‹"); + } + public void sleep() {} + + public String getName() { + return name; + } + public void setName(String name) { + this.name = name; + } + public int getSex() { + return sex; + } + public void setSex(int sex) { + this.sex = sex; + } + public Date getBirthday() { + return birthday; + } + public void setBirthday(Date birthday) { + this.birthday = birthday; + } +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Programmer.java b/java-learning/src/jp/co/jid/extendsSample/Programmer.java new file mode 100644 index 0000000..58bb117 --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Programmer.java @@ -0,0 +1,21 @@ +package jp.co.jid.extendsSample; + +public class Programmer extends Human { + private String pgLanguage; + + public void programing() {} + + @Override + public void eat(Food food) { + super.eat(food); + System.out.println("PCใซๅ‘ใ‹ใฃใฆไป•ไบ‹ใ‚’ใ—ใชใŒใ‚‰ใ”้ฃฏใ‚’้ฃŸในใ‚‹"); + } + + public String getPgLanguage() { + return pgLanguage; + } + + public void setPgLanguage(String pgLanguage) { + this.pgLanguage = pgLanguage; + } +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Programmer2.java b/java-learning/src/jp/co/jid/extendsSample/Programmer2.java new file mode 100644 index 0000000..2b477fe --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Programmer2.java @@ -0,0 +1,41 @@ +package jp.co.jid.extendsSample; + +import java.util.Date; + +public class Programmer2 { + private String name; + private int sex; + private Date birthday; + private String pgLanguage; + + public void walk() {} + public void unr() {} + public void eat(Food food) {} + public void sleep() {} + public void programing() {} + + public String getName() { + return name; + } + public void setName(String name) { + this.name = name; + } + public int getSex() { + return sex; + } + public void setSex(int sex) { + this.sex = sex; + } + public Date getBirthday() { + return birthday; + } + public void setBirthday(Date birthday) { + this.birthday = birthday; + } + public String getPgLanguage() { + return pgLanguage; + } + public void setPgLanguage(String pgLanguage) { + this.pgLanguage = pgLanguage; + } +} diff --git a/java-learning/src/jp/co/jid/interfaceSample/Calculation.java b/java-learning/src/jp/co/jid/interfaceSample/Calculation.java new file mode 100644 index 0000000..983ca36 --- /dev/null +++ b/java-learning/src/jp/co/jid/interfaceSample/Calculation.java @@ -0,0 +1,7 @@ +package jp.co.jid.interfaceSample; + +public interface Calculation { + default public int calc(int x, int y) { + return x + y; + } +} diff --git a/java-learning/src/jp/co/jid/interfaceSample/InterfaceSample.java b/java-learning/src/jp/co/jid/interfaceSample/InterfaceSample.java new file mode 100644 index 0000000..a51f835 --- /dev/null +++ b/java-learning/src/jp/co/jid/interfaceSample/InterfaceSample.java @@ -0,0 +1,15 @@ +package jp.co.jid.interfaceSample; + +public class InterfaceSample { + + public static void main(String[] args) { + Plus plus = new Plus(); + System.out.println(plus.calc(5, 2)); + Minus minus = new Minus(); + System.out.println(minus.calc(5, 2)); + + int[] nums = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + System.out.println(MathUtil.sum(nums)); + } + +} diff --git a/java-learning/src/jp/co/jid/interfaceSample/MathUtil.java b/java-learning/src/jp/co/jid/interfaceSample/MathUtil.java new file mode 100644 index 0000000..61dfc7c --- /dev/null +++ b/java-learning/src/jp/co/jid/interfaceSample/MathUtil.java @@ -0,0 +1,11 @@ +package jp.co.jid.interfaceSample; + +public interface MathUtil { + public static int sum(int... nums) { + int sum = 0; + for (int num : nums) { + sum += num; + } + return sum; + } +} diff --git a/java-learning/src/jp/co/jid/interfaceSample/Minus.java b/java-learning/src/jp/co/jid/interfaceSample/Minus.java new file mode 100644 index 0000000..aef30ed --- /dev/null +++ b/java-learning/src/jp/co/jid/interfaceSample/Minus.java @@ -0,0 +1,5 @@ +package jp.co.jid.interfaceSample; + +public class Minus implements Calculation { + +} diff --git a/java-learning/src/jp/co/jid/interfaceSample/Plus.java b/java-learning/src/jp/co/jid/interfaceSample/Plus.java new file mode 100644 index 0000000..24a36f4 --- /dev/null +++ b/java-learning/src/jp/co/jid/interfaceSample/Plus.java @@ -0,0 +1,8 @@ +package jp.co.jid.interfaceSample; + +public class Plus implements Calculation { + @Override + public int calc(int x, int y) { + return x + y; + } +} diff --git a/java-learning/src/jp/co/jid/repetiton/Repetiton3.java b/java-learning/src/jp/co/jid/repetiton/Repetiton3.java new file mode 100644 index 0000000..f5c63bb --- /dev/null +++ b/java-learning/src/jp/co/jid/repetiton/Repetiton3.java @@ -0,0 +1,15 @@ +package jp.co.jid.repetiton; + +public class Repetiton3 { + + public static void main(String[] args) { + int num = 1; + int sum = 0; + while (num <= 10) { + sum += num; + num++; + } + System.out.println(sum); + } + +} diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class new file mode 100644 index 0000000..be31229 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class new file mode 100644 index 0000000..4aaa734 --- /dev/null +++ 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b/java-learning/bin/jp/co/jid/interfaceSample/Plus.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class b/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class new file mode 100644 index 0000000..f78b826 --- /dev/null +++ b/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class b/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class new file mode 100644 index 0000000..12c1935 --- /dev/null +++ b/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/stringSample/stringSample.class b/java-learning/bin/jp/co/jid/stringSample/stringSample.class index b913694..ec6a0ba 100644 --- a/java-learning/bin/jp/co/jid/stringSample/stringSample.class +++ b/java-learning/bin/jp/co/jid/stringSample/stringSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class new file mode 100644 index 0000000..ead71b8 --- /dev/null +++ b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class Binary files differ diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample1.java b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java new file mode 100644 index 0000000..efb748b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample1 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray[2]); + intArray[2] = 7; + System.out.println(intArray[2]); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample2.java b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java new file mode 100644 index 0000000..c9c24b3 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java @@ -0,0 +1,10 @@ +package jp.co.jid.arraySample; + +public class ArraySample2 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray.length); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample3.java b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java new file mode 100644 index 0000000..02c3683 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample3 { + + public static void main(String[] args) { + int array[][] = {{11, 12, 13}, {21, 22, 23}}; + for (int[] row : array) { + for (int element : row) { + System.out.print(element + "\t"); + } + System.out.print("\n"); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample4.java b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java new file mode 100644 index 0000000..7a18a4b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample4 { + + public static void main(String[] args) { + int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for (int element : array) { + System.out.println(element); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample5.java b/java-learning/src/jp/co/jid/arraySample/ArraySample5.java new file mode 100644 index 0000000..3d980b0 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample5.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample5 { + + public static void main(String[] args) { + int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for (int index = 0; index < array.length; index++) { + array[index] *= 2; + } + for (int element : array) { + System.out.println(element); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample6.java b/java-learning/src/jp/co/jid/arraySample/ArraySample6.java new file mode 100644 index 0000000..3f2da81 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample6.java @@ -0,0 +1,14 @@ +package jp.co.jid.arraySample; + +public class ArraySample6 { + + public static void main(String[] args) { + int array[][] = {{11, 12, 13}, {21, 22, 23}}; + for (int i = 0; i < 2; i++) { + for (int j = 0; j < 3; j++) { + System.out.println(array[i][j]); + } + } + } + +} diff --git a/java-learning/src/jp/co/jid/classAndMethod/Calculation.java b/java-learning/src/jp/co/jid/classAndMethod/Calculation.java index 32964dc..923e482 100644 --- a/java-learning/src/jp/co/jid/classAndMethod/Calculation.java +++ b/java-learning/src/jp/co/jid/classAndMethod/Calculation.java @@ -11,6 +11,15 @@ return num1 + num2; } + public int plus(int... nums) { + System.out.println("ๅฏๅค‰้•ทๅผ•ๆ•ฐใฎๅˆ่จˆๅ€คใงใ™"); + int sum = 0; + for (int num : nums) { + sum += num; + } + return sum; + } + public int multiple(int num1, int num2) { int res = 0; for (int i = 0; i < num2; i++) { diff --git a/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java b/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java index ba5f4fb..7e386ee 100644 --- a/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java +++ b/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java @@ -3,15 +3,18 @@ public class ClassAndMethod { public static void main(String[] args) { -// Human human1 = new Human(); -// human1.printName(); -// Human human2 = new Human("็”ฐไธญ็ด‹ๆฌก้ƒŽ"); -// human2.printName(); + Human human1 = new Human(); + human1.printName(); + Human human2 = new Human("็”ฐไธญ็ด‹ๆฌก้ƒŽ"); + human2.printName(); Calculation calc = new Calculation(); System.out.println(calc.plus(2, 3)); -// System.out.println(calc.plus(2.0, 3.0)); -// System.out.println(calc.multiple(2, 3)); + System.out.println(calc.plus(2.0, 3.0)); + System.out.println(calc.multiple(2, 3)); + System.out.println(calc.plus(1, 2, 3)); + System.out.println(calc.plus(1, 2, 3, 4, 5)); + System.out.println(calc.plus(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)); } } diff --git a/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java b/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java new file mode 100644 index 0000000..1dd08a4 --- /dev/null +++ b/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java @@ -0,0 +1,31 @@ +package jp.co.jid.exceptionSample; + +import java.util.ArrayList; + +public class ExceptionSample { + + public static void main(String[] args) { + ExceptionSample sample = new ExceptionSample(); + ArrayList list = null; + sample.nullPointerExceptionSample(list); + sample.classNotFoundExceptiopnSample("TestClass"); + sample.numberFormatExceptionSample("ABCDE"); + } + + public void nullPointerExceptionSample(ArrayList list) { + list.size(); + } + + public void classNotFoundExceptiopnSample(String className) { + try { + Class.forName(className).newInstance(); + } catch (InstantiationException | IllegalAccessException | ClassNotFoundException e) { + e.printStackTrace(); + } + } + + public void numberFormatExceptionSample(String numStr) { + Integer.valueOf(numStr); + } + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java b/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java new file mode 100644 index 0000000..2fe0d4e --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java @@ -0,0 +1,18 @@ +package jp.co.jid.extendsSample; + +public class ExtendsSample { + + public static void main(String[] args) { + Programmer pg1 = new Programmer(); + pg1.setName("ๅฑฑ็”ฐๅคช้ƒŽ"); + pg1.setPgLanguage("Java"); + System.out.println(pg1.getName() + "ใ•ใ‚“ใฏ" + pg1.getPgLanguage() + "ใ‚’ไฝฟใ†ใ“ใจใŒใงใใพใ™"); + pg1.eat(new Food()); + + Programmer2 pg2 = new Programmer2(); + pg2.setName("้ˆดๆœจ่Šฑๅญ"); + pg2.setPgLanguage("C#"); + System.out.println(pg2.getName() + "ใ•ใ‚“ใฏ" + pg2.getPgLanguage() + "ใ‚’ไฝฟใ†ใ“ใจใŒใงใใพใ™"); + } + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Food.java b/java-learning/src/jp/co/jid/extendsSample/Food.java new file mode 100644 index 0000000..95c2556 --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Food.java @@ -0,0 +1,5 @@ +package jp.co.jid.extendsSample; + +public class Food { + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Human.java b/java-learning/src/jp/co/jid/extendsSample/Human.java new file mode 100644 index 0000000..246500b --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Human.java @@ -0,0 +1,35 @@ +package jp.co.jid.extendsSample; + +import java.util.Date; + +public class Human { + private String name; + private int sex; + private Date birthday; + + public void walk() {} + public void unr() {} + public void eat(Food food) { + System.out.println("ๅฎถๆ—ๅ›ฃใ‚‰ใ‚“ใงๅ††ๅ“ใ‚’ๅ›ฒใ‚“ใงใ”้ฃฏใ‚’้ฃŸในใ‚‹"); + } + public void sleep() {} + + public String getName() { + return name; + } + public void setName(String name) { + this.name = name; + } + public int getSex() { + return sex; + } + public void setSex(int sex) { + this.sex = sex; + } + public Date getBirthday() { + return birthday; + } + public void setBirthday(Date birthday) { + this.birthday = birthday; + } +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Programmer.java b/java-learning/src/jp/co/jid/extendsSample/Programmer.java new file mode 100644 index 0000000..58bb117 --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Programmer.java @@ -0,0 +1,21 @@ +package jp.co.jid.extendsSample; + +public class Programmer extends Human { + private String pgLanguage; + + public void programing() {} + + @Override + public void eat(Food food) { + super.eat(food); + System.out.println("PCใซๅ‘ใ‹ใฃใฆไป•ไบ‹ใ‚’ใ—ใชใŒใ‚‰ใ”้ฃฏใ‚’้ฃŸในใ‚‹"); + } + + public String getPgLanguage() { + return pgLanguage; + } + + public void setPgLanguage(String pgLanguage) { + this.pgLanguage = pgLanguage; + } +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Programmer2.java b/java-learning/src/jp/co/jid/extendsSample/Programmer2.java new file mode 100644 index 0000000..2b477fe --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Programmer2.java @@ -0,0 +1,41 @@ +package jp.co.jid.extendsSample; + +import java.util.Date; + +public class Programmer2 { + private String name; + private int sex; + private Date birthday; + private String pgLanguage; + + public void walk() {} + public void unr() {} + public void eat(Food food) {} + public void sleep() {} + public void programing() {} + + public String getName() { + return name; + } + public void setName(String name) { + this.name = name; + } + public int getSex() { + return sex; + } + public void setSex(int sex) { + this.sex = sex; + } + public Date getBirthday() { + return birthday; + } + public void setBirthday(Date birthday) { + this.birthday = birthday; + } + public String getPgLanguage() { + return pgLanguage; + } + public void setPgLanguage(String pgLanguage) { + this.pgLanguage = pgLanguage; + } +} diff --git a/java-learning/src/jp/co/jid/interfaceSample/Calculation.java b/java-learning/src/jp/co/jid/interfaceSample/Calculation.java new file mode 100644 index 0000000..983ca36 --- /dev/null +++ b/java-learning/src/jp/co/jid/interfaceSample/Calculation.java @@ -0,0 +1,7 @@ +package jp.co.jid.interfaceSample; + +public interface Calculation { + default public int calc(int x, int y) { + return x + y; + } +} diff --git a/java-learning/src/jp/co/jid/interfaceSample/InterfaceSample.java b/java-learning/src/jp/co/jid/interfaceSample/InterfaceSample.java new file mode 100644 index 0000000..a51f835 --- /dev/null +++ b/java-learning/src/jp/co/jid/interfaceSample/InterfaceSample.java @@ -0,0 +1,15 @@ +package jp.co.jid.interfaceSample; + +public class InterfaceSample { + + public static void main(String[] args) { + Plus plus = new Plus(); + System.out.println(plus.calc(5, 2)); + Minus minus = new Minus(); + System.out.println(minus.calc(5, 2)); + + int[] nums = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + System.out.println(MathUtil.sum(nums)); + } + +} diff --git a/java-learning/src/jp/co/jid/interfaceSample/MathUtil.java b/java-learning/src/jp/co/jid/interfaceSample/MathUtil.java new file mode 100644 index 0000000..61dfc7c --- /dev/null +++ b/java-learning/src/jp/co/jid/interfaceSample/MathUtil.java @@ -0,0 +1,11 @@ +package jp.co.jid.interfaceSample; + +public interface MathUtil { + public static int sum(int... nums) { + int sum = 0; + for (int num : nums) { + sum += num; + } + return sum; + } +} diff --git a/java-learning/src/jp/co/jid/interfaceSample/Minus.java b/java-learning/src/jp/co/jid/interfaceSample/Minus.java new file mode 100644 index 0000000..aef30ed --- /dev/null +++ b/java-learning/src/jp/co/jid/interfaceSample/Minus.java @@ -0,0 +1,5 @@ +package jp.co.jid.interfaceSample; + +public class Minus implements Calculation { + +} diff --git a/java-learning/src/jp/co/jid/interfaceSample/Plus.java b/java-learning/src/jp/co/jid/interfaceSample/Plus.java new file mode 100644 index 0000000..24a36f4 --- /dev/null +++ b/java-learning/src/jp/co/jid/interfaceSample/Plus.java @@ -0,0 +1,8 @@ +package jp.co.jid.interfaceSample; + +public class Plus implements Calculation { + @Override + public int calc(int x, int y) { + return x + y; + } +} diff --git a/java-learning/src/jp/co/jid/repetiton/Repetiton3.java b/java-learning/src/jp/co/jid/repetiton/Repetiton3.java new file mode 100644 index 0000000..f5c63bb --- /dev/null +++ b/java-learning/src/jp/co/jid/repetiton/Repetiton3.java @@ -0,0 +1,15 @@ +package jp.co.jid.repetiton; + +public class Repetiton3 { + + public static void main(String[] args) { + int num = 1; + int sum = 0; + while (num <= 10) { + sum += num; + num++; + } + System.out.println(sum); + } + +} diff --git a/java-learning/src/jp/co/jid/repetiton/Repetiton4.java b/java-learning/src/jp/co/jid/repetiton/Repetiton4.java new file mode 100644 index 0000000..f780bbb --- /dev/null +++ b/java-learning/src/jp/co/jid/repetiton/Repetiton4.java @@ -0,0 +1,15 @@ +package jp.co.jid.repetiton; + +public class Repetiton4 { + + public static void main(String[] args) { + int num = 1; + int sum = 0; + do { + sum += num; + num++; + } while (num <= 10); + System.out.println(sum); + } + +} diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class new file mode 100644 index 0000000..be31229 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class new file mode 100644 index 0000000..4aaa734 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class 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b/java-learning/bin/jp/co/jid/extendsSample/Programmer.class new file mode 100644 index 0000000..f91d072 --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/Programmer.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/Programmer2.class b/java-learning/bin/jp/co/jid/extendsSample/Programmer2.class new file mode 100644 index 0000000..f43b997 --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/Programmer2.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/Calculation.class b/java-learning/bin/jp/co/jid/interfaceSample/Calculation.class new file mode 100644 index 0000000..3f2f543 --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/Calculation.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/InterfaceSample.class b/java-learning/bin/jp/co/jid/interfaceSample/InterfaceSample.class new file mode 100644 index 0000000..82a05e3 --- /dev/null +++ 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b/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class new file mode 100644 index 0000000..f78b826 --- /dev/null +++ b/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class b/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class new file mode 100644 index 0000000..12c1935 --- /dev/null +++ b/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/stringSample/stringSample.class b/java-learning/bin/jp/co/jid/stringSample/stringSample.class index b913694..ec6a0ba 100644 --- a/java-learning/bin/jp/co/jid/stringSample/stringSample.class +++ b/java-learning/bin/jp/co/jid/stringSample/stringSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class new file mode 100644 index 0000000..ead71b8 --- /dev/null +++ b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class Binary files differ diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample1.java b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java new file mode 100644 index 0000000..efb748b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample1 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray[2]); + intArray[2] = 7; + System.out.println(intArray[2]); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample2.java b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java new file mode 100644 index 0000000..c9c24b3 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java @@ -0,0 +1,10 @@ +package jp.co.jid.arraySample; + +public class ArraySample2 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray.length); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample3.java b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java new file mode 100644 index 0000000..02c3683 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample3 { + + public static void main(String[] args) { + int array[][] = {{11, 12, 13}, {21, 22, 23}}; + for (int[] row : array) { + for (int element : row) { + System.out.print(element + "\t"); + } + System.out.print("\n"); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample4.java b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java new file mode 100644 index 0000000..7a18a4b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample4 { + + public static void main(String[] args) { + int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for (int element : array) { + System.out.println(element); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample5.java b/java-learning/src/jp/co/jid/arraySample/ArraySample5.java new file mode 100644 index 0000000..3d980b0 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample5.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample5 { + + public static void main(String[] args) { + int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for (int index = 0; index < array.length; index++) { + array[index] *= 2; + } + for (int element : array) { + System.out.println(element); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample6.java b/java-learning/src/jp/co/jid/arraySample/ArraySample6.java new file mode 100644 index 0000000..3f2da81 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample6.java @@ -0,0 +1,14 @@ +package jp.co.jid.arraySample; + +public class ArraySample6 { + + public static void main(String[] args) { + int array[][] = {{11, 12, 13}, {21, 22, 23}}; + for (int i = 0; i < 2; i++) { + for (int j = 0; j < 3; j++) { + System.out.println(array[i][j]); + } + } + } + +} diff --git a/java-learning/src/jp/co/jid/classAndMethod/Calculation.java b/java-learning/src/jp/co/jid/classAndMethod/Calculation.java index 32964dc..923e482 100644 --- a/java-learning/src/jp/co/jid/classAndMethod/Calculation.java +++ b/java-learning/src/jp/co/jid/classAndMethod/Calculation.java @@ -11,6 +11,15 @@ return num1 + num2; } + public int plus(int... nums) { + System.out.println("ๅฏๅค‰้•ทๅผ•ๆ•ฐใฎๅˆ่จˆๅ€คใงใ™"); + int sum = 0; + for (int num : nums) { + sum += num; + } + return sum; + } + public int multiple(int num1, int num2) { int res = 0; for (int i = 0; i < num2; i++) { diff --git a/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java b/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java index ba5f4fb..7e386ee 100644 --- a/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java +++ b/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java @@ -3,15 +3,18 @@ public class ClassAndMethod { public static void main(String[] args) { -// Human human1 = new Human(); -// human1.printName(); -// Human human2 = new Human("็”ฐไธญ็ด‹ๆฌก้ƒŽ"); -// human2.printName(); + Human human1 = new Human(); + human1.printName(); + Human human2 = new Human("็”ฐไธญ็ด‹ๆฌก้ƒŽ"); + human2.printName(); Calculation calc = new Calculation(); System.out.println(calc.plus(2, 3)); -// System.out.println(calc.plus(2.0, 3.0)); -// System.out.println(calc.multiple(2, 3)); + System.out.println(calc.plus(2.0, 3.0)); + System.out.println(calc.multiple(2, 3)); + System.out.println(calc.plus(1, 2, 3)); + System.out.println(calc.plus(1, 2, 3, 4, 5)); + System.out.println(calc.plus(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)); } } diff --git a/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java b/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java new file mode 100644 index 0000000..1dd08a4 --- /dev/null +++ b/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java @@ -0,0 +1,31 @@ +package jp.co.jid.exceptionSample; + +import java.util.ArrayList; + +public class ExceptionSample { + + public static void main(String[] args) { + ExceptionSample sample = new ExceptionSample(); + ArrayList list = null; + sample.nullPointerExceptionSample(list); + sample.classNotFoundExceptiopnSample("TestClass"); + sample.numberFormatExceptionSample("ABCDE"); + } + + public void nullPointerExceptionSample(ArrayList list) { + list.size(); + } + + public void classNotFoundExceptiopnSample(String className) { + try { + Class.forName(className).newInstance(); + } catch (InstantiationException | IllegalAccessException | ClassNotFoundException e) { + e.printStackTrace(); + } + } + + public void numberFormatExceptionSample(String numStr) { + Integer.valueOf(numStr); + } + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java b/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java new file mode 100644 index 0000000..2fe0d4e --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java @@ -0,0 +1,18 @@ +package jp.co.jid.extendsSample; + +public class ExtendsSample { + + public static void main(String[] args) { + Programmer pg1 = new Programmer(); + pg1.setName("ๅฑฑ็”ฐๅคช้ƒŽ"); + pg1.setPgLanguage("Java"); + System.out.println(pg1.getName() + "ใ•ใ‚“ใฏ" + pg1.getPgLanguage() + "ใ‚’ไฝฟใ†ใ“ใจใŒใงใใพใ™"); + pg1.eat(new Food()); + + Programmer2 pg2 = new Programmer2(); + pg2.setName("้ˆดๆœจ่Šฑๅญ"); + pg2.setPgLanguage("C#"); + System.out.println(pg2.getName() + "ใ•ใ‚“ใฏ" + pg2.getPgLanguage() + "ใ‚’ไฝฟใ†ใ“ใจใŒใงใใพใ™"); + } + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Food.java b/java-learning/src/jp/co/jid/extendsSample/Food.java new file mode 100644 index 0000000..95c2556 --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Food.java @@ -0,0 +1,5 @@ +package jp.co.jid.extendsSample; + +public class Food { + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Human.java b/java-learning/src/jp/co/jid/extendsSample/Human.java new file mode 100644 index 0000000..246500b --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Human.java @@ -0,0 +1,35 @@ +package jp.co.jid.extendsSample; + +import java.util.Date; + +public class Human { + private String name; + private int sex; + private Date birthday; + + public void walk() {} + public void unr() {} + public void eat(Food food) { + System.out.println("ๅฎถๆ—ๅ›ฃใ‚‰ใ‚“ใงๅ††ๅ“ใ‚’ๅ›ฒใ‚“ใงใ”้ฃฏใ‚’้ฃŸในใ‚‹"); + } + public void sleep() {} + + public String getName() { + return name; + } + public void setName(String name) { + this.name = name; + } + public int getSex() { + return sex; + } + public void setSex(int sex) { + this.sex = sex; + } + public Date getBirthday() { + return birthday; + } + public void setBirthday(Date birthday) { + this.birthday = birthday; + } +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Programmer.java b/java-learning/src/jp/co/jid/extendsSample/Programmer.java new file mode 100644 index 0000000..58bb117 --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Programmer.java @@ -0,0 +1,21 @@ +package jp.co.jid.extendsSample; + +public class Programmer extends Human { + private String pgLanguage; + + public void programing() {} + + @Override + public void eat(Food food) { + super.eat(food); + System.out.println("PCใซๅ‘ใ‹ใฃใฆไป•ไบ‹ใ‚’ใ—ใชใŒใ‚‰ใ”้ฃฏใ‚’้ฃŸในใ‚‹"); + } + + public String getPgLanguage() { + return pgLanguage; + } + + public void setPgLanguage(String pgLanguage) { + this.pgLanguage = pgLanguage; + } +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Programmer2.java b/java-learning/src/jp/co/jid/extendsSample/Programmer2.java new file mode 100644 index 0000000..2b477fe --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Programmer2.java @@ -0,0 +1,41 @@ +package jp.co.jid.extendsSample; + +import java.util.Date; + +public class Programmer2 { + private String name; + private int sex; + private Date birthday; + private String pgLanguage; + + public void walk() {} + public void unr() {} + public void eat(Food food) {} + public void sleep() {} + public void programing() {} + + public String getName() { + return name; + } + public void setName(String name) { + this.name = name; + } + public int getSex() { + return sex; + } + public void setSex(int sex) { + this.sex = sex; + } + public Date getBirthday() { + return birthday; + } + public void setBirthday(Date birthday) { + this.birthday = birthday; + } + public String getPgLanguage() { + return pgLanguage; + } + public void setPgLanguage(String pgLanguage) { + this.pgLanguage = pgLanguage; + } +} diff --git a/java-learning/src/jp/co/jid/interfaceSample/Calculation.java b/java-learning/src/jp/co/jid/interfaceSample/Calculation.java new file mode 100644 index 0000000..983ca36 --- /dev/null +++ b/java-learning/src/jp/co/jid/interfaceSample/Calculation.java @@ -0,0 +1,7 @@ +package jp.co.jid.interfaceSample; + +public interface Calculation { + default public int calc(int x, int y) { + return x + y; + } +} diff --git a/java-learning/src/jp/co/jid/interfaceSample/InterfaceSample.java b/java-learning/src/jp/co/jid/interfaceSample/InterfaceSample.java new file mode 100644 index 0000000..a51f835 --- /dev/null +++ b/java-learning/src/jp/co/jid/interfaceSample/InterfaceSample.java @@ -0,0 +1,15 @@ +package jp.co.jid.interfaceSample; + +public class InterfaceSample { + + public static void main(String[] args) { + Plus plus = new Plus(); + System.out.println(plus.calc(5, 2)); + Minus minus = new Minus(); + System.out.println(minus.calc(5, 2)); + + int[] nums = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + System.out.println(MathUtil.sum(nums)); + } + +} diff --git a/java-learning/src/jp/co/jid/interfaceSample/MathUtil.java b/java-learning/src/jp/co/jid/interfaceSample/MathUtil.java new file mode 100644 index 0000000..61dfc7c --- /dev/null +++ b/java-learning/src/jp/co/jid/interfaceSample/MathUtil.java @@ -0,0 +1,11 @@ +package jp.co.jid.interfaceSample; + +public interface MathUtil { + public static int sum(int... nums) { + int sum = 0; + for (int num : nums) { + sum += num; + } + return sum; + } +} diff --git a/java-learning/src/jp/co/jid/interfaceSample/Minus.java b/java-learning/src/jp/co/jid/interfaceSample/Minus.java new file mode 100644 index 0000000..aef30ed --- /dev/null +++ b/java-learning/src/jp/co/jid/interfaceSample/Minus.java @@ -0,0 +1,5 @@ +package jp.co.jid.interfaceSample; + +public class Minus implements Calculation { + +} diff --git a/java-learning/src/jp/co/jid/interfaceSample/Plus.java b/java-learning/src/jp/co/jid/interfaceSample/Plus.java new file mode 100644 index 0000000..24a36f4 --- /dev/null +++ b/java-learning/src/jp/co/jid/interfaceSample/Plus.java @@ -0,0 +1,8 @@ +package jp.co.jid.interfaceSample; + +public class Plus implements Calculation { + @Override + public int calc(int x, int y) { + return x + y; + } +} diff --git a/java-learning/src/jp/co/jid/repetiton/Repetiton3.java b/java-learning/src/jp/co/jid/repetiton/Repetiton3.java new file mode 100644 index 0000000..f5c63bb --- /dev/null +++ b/java-learning/src/jp/co/jid/repetiton/Repetiton3.java @@ -0,0 +1,15 @@ +package jp.co.jid.repetiton; + +public class Repetiton3 { + + public static void main(String[] args) { + int num = 1; + int sum = 0; + while (num <= 10) { + sum += num; + num++; + } + System.out.println(sum); + } + +} diff --git a/java-learning/src/jp/co/jid/repetiton/Repetiton4.java b/java-learning/src/jp/co/jid/repetiton/Repetiton4.java new file mode 100644 index 0000000..f780bbb --- /dev/null +++ b/java-learning/src/jp/co/jid/repetiton/Repetiton4.java @@ -0,0 +1,15 @@ +package jp.co.jid.repetiton; + +public class Repetiton4 { + + public static void main(String[] args) { + int num = 1; + int sum = 0; + do { + sum += num; + num++; + } while (num <= 10); + System.out.println(sum); + } + +} diff --git a/java-learning/src/jp/co/jid/stringSample/StringSample.java b/java-learning/src/jp/co/jid/stringSample/StringSample.java new file mode 100644 index 0000000..f40d9f3 --- /dev/null +++ b/java-learning/src/jp/co/jid/stringSample/StringSample.java @@ -0,0 +1,117 @@ +package jp.co.jid.stringSample; + +import java.util.regex.Pattern; + +public class StringSample { + + public static void main(String[] args) { +// instanceSample(); +// concatSample(); +// stringBufferSample(); +// splitSample(); +// splitSample2(); +// replaceSample(); +// replaceAllSample(); +// indexOfSample(); + equalsSample(); + compileSample(); + } + + private static void instanceSample() { + String str1 = new String("ABC"); + String str2 = "123"; + + System.out.println(str1); + System.out.println(str2); + } + + private static void concatSample() { + String str1 = "ใ“ใฎๆ–‡ๅญ—ๅˆ—ใจ"; + String str2 = "ใ“ใฎๆ–‡ๅญ—ๅˆ—ใ‚’็ตๅˆใ—ใพใ™"; + System.out.println(str1.concat(str2)); + System.out.println(str1 + str2); + } + + private static void stringBufferSample() { + StringBuffer sb = new StringBuffer(); + sb.append("ใ“ใฎๆ–‡ๅญ—ๅˆ—ใจ"); + sb.append("ใ“ใฎๆ–‡ๅญ—ๅˆ—ใ‚’็ตๅˆใ—ใพใ™"); + String str = sb.toString(); + System.out.println(str); + } + + private static void splitSample() { + String str1 = "abc,def,ghi,jkl,mno"; + String[] str2 = str1.split(","); + for (String str3 : str2) { + System.out.println(str3); + } + } + + private static void splitSample2() { + String str1 = "abc def ghi jkl mno"; + String[] str2 = str1.split("\t"); + for (String str3 : str2) { + System.out.println(str3); + } + } + + private static void replaceSample() { + String str = "abcdef"; + System.out.println(str.replace("bcd", "BCD")); + } + + private static void replaceAllSample() { + String str = "abc123def123"; + System.out.println(str.replaceAll("[a-z]+", "0")); + System.out.println(str.replaceAll("[a-z]", "0")); + } + + private static void indexOfSample() { + String str = "abcdefg"; + System.out.println(str.indexOf("ef")); + System.out.println(str.indexOf("EF")); + } + + private static void equalsSample() { + String str1 = new String("abcde"); + String str2 = new String("abcde"); + if (str1.equals(str2)) { + System.out.println("ๆฏ”่ผƒ็ตๆžœใฏๅŒใ˜ใงใ™"); + } else { + System.out.println("ๆฏ”่ผƒ็ตๆžœใฏ้•ใ„ใพใ™"); + } + if (str1 == str2) { + System.out.println("ๆฏ”่ผƒ็ตๆžœใฏๅŒใ˜ใงใ™"); + } else { + System.out.println("ๆฏ”่ผƒ็ตๆžœใฏ้•ใ„ใพใ™"); + } + } + + private static void compileSample() { + String str1 = new String("abcde"); + String str2 = new String("abcde"); + String str3 = new String("bcd"); + + if (Pattern.compile(str1).matcher(str2).matches()) { + System.out.println("ๆฏ”่ผƒ็ตๆžœใฏๅŒใ˜ใงใ™"); + } else { + System.out.println("ๆฏ”่ผƒ็ตๆžœใฏ้•ใ„ใพใ™"); + } + if (Pattern.compile(str1).matcher(str3).matches()) { + System.out.println("ๆฏ”่ผƒ็ตๆžœใฏๅŒใ˜ใงใ™"); + } else { + System.out.println("ๆฏ”่ผƒ็ตๆžœใฏ้•ใ„ใพใ™"); + } + if (Pattern.compile(str3).matcher(str1).find()) { + System.out.println("ๆฏ”่ผƒ็ตๆžœใฏๅŒใ˜ใงใ™"); + } else { + System.out.println("ๆฏ”่ผƒ็ตๆžœใฏ้•ใ„ใพใ™"); + } + if (Pattern.compile(str1).matcher(str3).find()) { + System.out.println("ๆฏ”่ผƒ็ตๆžœใฏๅŒใ˜ใงใ™"); + } else { + System.out.println("ๆฏ”่ผƒ็ตๆžœใฏ้•ใ„ใพใ™"); + } + } +} diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class new file mode 100644 index 0000000..be31229 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class new file mode 100644 index 0000000..4aaa734 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class new file mode 100644 index 0000000..c81ead4 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample4.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample4.class new file mode 100644 index 0000000..e3a5d2f --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample4.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample5.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample5.class new file mode 100644 index 0000000..6f8c4e6 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample5.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample6.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample6.class new file mode 100644 index 0000000..bdedfd0 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample6.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/classAndMethod/Calculation.class b/java-learning/bin/jp/co/jid/classAndMethod/Calculation.class index e8c458e..f7c5ffc 100644 --- a/java-learning/bin/jp/co/jid/classAndMethod/Calculation.class +++ b/java-learning/bin/jp/co/jid/classAndMethod/Calculation.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class b/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class index b682f8f..4287ec1 100644 --- a/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class +++ b/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/exceptionSample/ExceptionSample.class b/java-learning/bin/jp/co/jid/exceptionSample/ExceptionSample.class new file mode 100644 index 0000000..6069b95 --- /dev/null +++ b/java-learning/bin/jp/co/jid/exceptionSample/ExceptionSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/ExtendsSample.class b/java-learning/bin/jp/co/jid/extendsSample/ExtendsSample.class new file mode 100644 index 0000000..971dbb9 --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/ExtendsSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/Food.class b/java-learning/bin/jp/co/jid/extendsSample/Food.class new file mode 100644 index 0000000..7cc9c1a --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/Food.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/Human.class b/java-learning/bin/jp/co/jid/extendsSample/Human.class new file mode 100644 index 0000000..a2a1c95 --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/Human.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/Programmer.class b/java-learning/bin/jp/co/jid/extendsSample/Programmer.class new file mode 100644 index 0000000..f91d072 --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/Programmer.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/Programmer2.class b/java-learning/bin/jp/co/jid/extendsSample/Programmer2.class new file mode 100644 index 0000000..f43b997 --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/Programmer2.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/Calculation.class b/java-learning/bin/jp/co/jid/interfaceSample/Calculation.class new file mode 100644 index 0000000..3f2f543 --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/Calculation.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/InterfaceSample.class b/java-learning/bin/jp/co/jid/interfaceSample/InterfaceSample.class new file mode 100644 index 0000000..82a05e3 --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/InterfaceSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/MathUtil.class b/java-learning/bin/jp/co/jid/interfaceSample/MathUtil.class new file mode 100644 index 0000000..833d740 --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/MathUtil.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/Minus.class b/java-learning/bin/jp/co/jid/interfaceSample/Minus.class new file mode 100644 index 0000000..119f3b8 --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/Minus.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/interfaceSample/Plus.class b/java-learning/bin/jp/co/jid/interfaceSample/Plus.class new file mode 100644 index 0000000..fc4e66b --- /dev/null +++ b/java-learning/bin/jp/co/jid/interfaceSample/Plus.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class b/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class new file mode 100644 index 0000000..f78b826 --- /dev/null +++ b/java-learning/bin/jp/co/jid/repetiton/Repetiton3.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class b/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class new file mode 100644 index 0000000..12c1935 --- /dev/null +++ b/java-learning/bin/jp/co/jid/repetiton/Repetiton4.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/stringSample/stringSample.class b/java-learning/bin/jp/co/jid/stringSample/stringSample.class index b913694..ec6a0ba 100644 --- a/java-learning/bin/jp/co/jid/stringSample/stringSample.class +++ b/java-learning/bin/jp/co/jid/stringSample/stringSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class new file mode 100644 index 0000000..ead71b8 --- /dev/null +++ b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class Binary files differ diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample1.java b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java new file mode 100644 index 0000000..efb748b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample1 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray[2]); + intArray[2] = 7; + System.out.println(intArray[2]); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample2.java b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java new file mode 100644 index 0000000..c9c24b3 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java @@ -0,0 +1,10 @@ +package jp.co.jid.arraySample; + +public class ArraySample2 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray.length); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample3.java b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java new file mode 100644 index 0000000..02c3683 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample3 { + + public static void main(String[] args) { + int array[][] = {{11, 12, 13}, {21, 22, 23}}; + for (int[] row : array) { + for (int element : row) { + System.out.print(element + "\t"); + } + System.out.print("\n"); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample4.java b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java new file mode 100644 index 0000000..7a18a4b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample4 { + + public static void main(String[] args) { + int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for (int element : array) { + System.out.println(element); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample5.java b/java-learning/src/jp/co/jid/arraySample/ArraySample5.java new file mode 100644 index 0000000..3d980b0 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample5.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample5 { + + public static void main(String[] args) { + int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for (int index = 0; index < array.length; index++) { + array[index] *= 2; + } + for (int element : array) { + System.out.println(element); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample6.java b/java-learning/src/jp/co/jid/arraySample/ArraySample6.java new file mode 100644 index 0000000..3f2da81 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample6.java @@ -0,0 +1,14 @@ +package jp.co.jid.arraySample; + +public class ArraySample6 { + + public static void main(String[] args) { + int array[][] = {{11, 12, 13}, {21, 22, 23}}; + for (int i = 0; i < 2; i++) { + for (int j = 0; j < 3; j++) { + System.out.println(array[i][j]); + } + } + } + +} diff --git a/java-learning/src/jp/co/jid/classAndMethod/Calculation.java b/java-learning/src/jp/co/jid/classAndMethod/Calculation.java index 32964dc..923e482 100644 --- a/java-learning/src/jp/co/jid/classAndMethod/Calculation.java +++ b/java-learning/src/jp/co/jid/classAndMethod/Calculation.java @@ -11,6 +11,15 @@ return num1 + num2; } + public int plus(int... nums) { + System.out.println("ๅฏๅค‰้•ทๅผ•ๆ•ฐใฎๅˆ่จˆๅ€คใงใ™"); + int sum = 0; + for (int num : nums) { + sum += num; + } + return sum; + } + public int multiple(int num1, int num2) { int res = 0; for (int i = 0; i < num2; i++) { diff --git a/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java b/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java index ba5f4fb..7e386ee 100644 --- a/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java +++ b/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java @@ -3,15 +3,18 @@ public class ClassAndMethod { public static void main(String[] args) { -// Human human1 = new Human(); -// human1.printName(); -// Human human2 = new Human("็”ฐไธญ็ด‹ๆฌก้ƒŽ"); -// human2.printName(); + Human human1 = new Human(); + human1.printName(); + Human human2 = new Human("็”ฐไธญ็ด‹ๆฌก้ƒŽ"); + human2.printName(); Calculation calc = new Calculation(); System.out.println(calc.plus(2, 3)); -// System.out.println(calc.plus(2.0, 3.0)); -// System.out.println(calc.multiple(2, 3)); + System.out.println(calc.plus(2.0, 3.0)); + System.out.println(calc.multiple(2, 3)); + System.out.println(calc.plus(1, 2, 3)); + System.out.println(calc.plus(1, 2, 3, 4, 5)); + System.out.println(calc.plus(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)); } } diff --git a/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java b/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java new file mode 100644 index 0000000..1dd08a4 --- /dev/null +++ b/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java @@ -0,0 +1,31 @@ +package jp.co.jid.exceptionSample; + +import java.util.ArrayList; + +public class ExceptionSample { + + public static void main(String[] args) { + ExceptionSample sample = new ExceptionSample(); + ArrayList list = null; + sample.nullPointerExceptionSample(list); + sample.classNotFoundExceptiopnSample("TestClass"); + sample.numberFormatExceptionSample("ABCDE"); + } + + public void nullPointerExceptionSample(ArrayList list) { + list.size(); + } + + public void classNotFoundExceptiopnSample(String className) { + try { + Class.forName(className).newInstance(); + } catch (InstantiationException | IllegalAccessException | ClassNotFoundException e) { + e.printStackTrace(); + } + } + + public void numberFormatExceptionSample(String numStr) { + Integer.valueOf(numStr); + } + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java b/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java new file mode 100644 index 0000000..2fe0d4e --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java @@ -0,0 +1,18 @@ +package jp.co.jid.extendsSample; + +public class ExtendsSample { + + public static void main(String[] args) { + Programmer pg1 = new Programmer(); + pg1.setName("ๅฑฑ็”ฐๅคช้ƒŽ"); + pg1.setPgLanguage("Java"); + System.out.println(pg1.getName() + "ใ•ใ‚“ใฏ" + pg1.getPgLanguage() + "ใ‚’ไฝฟใ†ใ“ใจใŒใงใใพใ™"); + pg1.eat(new Food()); + + Programmer2 pg2 = new Programmer2(); + pg2.setName("้ˆดๆœจ่Šฑๅญ"); + pg2.setPgLanguage("C#"); + System.out.println(pg2.getName() + "ใ•ใ‚“ใฏ" + pg2.getPgLanguage() + "ใ‚’ไฝฟใ†ใ“ใจใŒใงใใพใ™"); + } + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Food.java b/java-learning/src/jp/co/jid/extendsSample/Food.java new file mode 100644 index 0000000..95c2556 --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Food.java @@ -0,0 +1,5 @@ +package jp.co.jid.extendsSample; + +public class Food { + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Human.java b/java-learning/src/jp/co/jid/extendsSample/Human.java new file mode 100644 index 0000000..246500b --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Human.java @@ -0,0 +1,35 @@ +package jp.co.jid.extendsSample; + +import java.util.Date; + +public class Human { + private String name; + private int sex; + private Date birthday; + + public void walk() {} + public void unr() {} + public void eat(Food food) { + System.out.println("ๅฎถๆ—ๅ›ฃใ‚‰ใ‚“ใงๅ††ๅ“ใ‚’ๅ›ฒใ‚“ใงใ”้ฃฏใ‚’้ฃŸในใ‚‹"); + } + public void sleep() {} + + public String getName() { + return name; + } + public void setName(String name) { + this.name = name; + } + public int getSex() { + return sex; + } + public void setSex(int sex) { + this.sex = sex; + } + public Date getBirthday() { + return birthday; + } + public void setBirthday(Date birthday) { + this.birthday = birthday; + } +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Programmer.java b/java-learning/src/jp/co/jid/extendsSample/Programmer.java new file mode 100644 index 0000000..58bb117 --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Programmer.java @@ -0,0 +1,21 @@ +package jp.co.jid.extendsSample; + +public class Programmer extends Human { + private String pgLanguage; + + public void programing() {} + + @Override + public void eat(Food food) { + super.eat(food); + System.out.println("PCใซๅ‘ใ‹ใฃใฆไป•ไบ‹ใ‚’ใ—ใชใŒใ‚‰ใ”้ฃฏใ‚’้ฃŸในใ‚‹"); + } + + public String getPgLanguage() { + return pgLanguage; + } + + public void setPgLanguage(String pgLanguage) { + this.pgLanguage = pgLanguage; + } +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Programmer2.java b/java-learning/src/jp/co/jid/extendsSample/Programmer2.java new file mode 100644 index 0000000..2b477fe --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Programmer2.java @@ -0,0 +1,41 @@ +package jp.co.jid.extendsSample; + +import java.util.Date; + +public class Programmer2 { + private String name; + private int sex; + private Date birthday; + private String pgLanguage; + + public void walk() {} + public void unr() {} + public void eat(Food food) {} + public void sleep() {} + public void programing() {} + + public String getName() { + return name; + } + public void setName(String name) { + this.name = name; + } + public int getSex() { + return sex; + } + public void setSex(int sex) { + this.sex = sex; + } + public Date getBirthday() { + return birthday; + } + public void setBirthday(Date birthday) { + this.birthday = birthday; + } + public String getPgLanguage() { + return pgLanguage; + } + public void setPgLanguage(String pgLanguage) { + this.pgLanguage = pgLanguage; + } +} diff --git a/java-learning/src/jp/co/jid/interfaceSample/Calculation.java b/java-learning/src/jp/co/jid/interfaceSample/Calculation.java new file mode 100644 index 0000000..983ca36 --- /dev/null +++ b/java-learning/src/jp/co/jid/interfaceSample/Calculation.java @@ -0,0 +1,7 @@ +package jp.co.jid.interfaceSample; + +public interface Calculation { + default public int calc(int x, int y) { + return x + y; + } +} diff --git a/java-learning/src/jp/co/jid/interfaceSample/InterfaceSample.java b/java-learning/src/jp/co/jid/interfaceSample/InterfaceSample.java new file mode 100644 index 0000000..a51f835 --- /dev/null +++ b/java-learning/src/jp/co/jid/interfaceSample/InterfaceSample.java @@ -0,0 +1,15 @@ +package jp.co.jid.interfaceSample; + +public class InterfaceSample { + + public static void main(String[] args) { + Plus plus = new Plus(); + System.out.println(plus.calc(5, 2)); + Minus minus = new Minus(); + System.out.println(minus.calc(5, 2)); + + int[] nums = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + System.out.println(MathUtil.sum(nums)); + } + +} diff --git a/java-learning/src/jp/co/jid/interfaceSample/MathUtil.java b/java-learning/src/jp/co/jid/interfaceSample/MathUtil.java new file mode 100644 index 0000000..61dfc7c --- /dev/null +++ b/java-learning/src/jp/co/jid/interfaceSample/MathUtil.java @@ -0,0 +1,11 @@ +package jp.co.jid.interfaceSample; + +public interface MathUtil { + public static int sum(int... nums) { + int sum = 0; + for (int num : nums) { + sum += num; + } + return sum; + } +} diff --git a/java-learning/src/jp/co/jid/interfaceSample/Minus.java b/java-learning/src/jp/co/jid/interfaceSample/Minus.java new file mode 100644 index 0000000..aef30ed --- /dev/null +++ b/java-learning/src/jp/co/jid/interfaceSample/Minus.java @@ -0,0 +1,5 @@ +package jp.co.jid.interfaceSample; + +public class Minus implements Calculation { + +} diff --git a/java-learning/src/jp/co/jid/interfaceSample/Plus.java b/java-learning/src/jp/co/jid/interfaceSample/Plus.java new file mode 100644 index 0000000..24a36f4 --- /dev/null +++ b/java-learning/src/jp/co/jid/interfaceSample/Plus.java @@ -0,0 +1,8 @@ +package jp.co.jid.interfaceSample; + +public class Plus implements Calculation { + @Override + public int calc(int x, int y) { + return x + y; + } +} diff --git a/java-learning/src/jp/co/jid/repetiton/Repetiton3.java b/java-learning/src/jp/co/jid/repetiton/Repetiton3.java new file mode 100644 index 0000000..f5c63bb --- /dev/null +++ b/java-learning/src/jp/co/jid/repetiton/Repetiton3.java @@ -0,0 +1,15 @@ +package jp.co.jid.repetiton; + +public class Repetiton3 { + + public static void main(String[] args) { + int num = 1; + int sum = 0; + while (num <= 10) { + sum += num; + num++; + } + System.out.println(sum); + } + +} diff --git a/java-learning/src/jp/co/jid/repetiton/Repetiton4.java b/java-learning/src/jp/co/jid/repetiton/Repetiton4.java new file mode 100644 index 0000000..f780bbb --- /dev/null +++ b/java-learning/src/jp/co/jid/repetiton/Repetiton4.java @@ -0,0 +1,15 @@ +package jp.co.jid.repetiton; + +public class Repetiton4 { + + public static void main(String[] args) { + int num = 1; + int sum = 0; + do { + sum += num; + num++; + } while (num <= 10); + System.out.println(sum); + } + +} diff --git a/java-learning/src/jp/co/jid/stringSample/StringSample.java b/java-learning/src/jp/co/jid/stringSample/StringSample.java new file mode 100644 index 0000000..f40d9f3 --- /dev/null +++ b/java-learning/src/jp/co/jid/stringSample/StringSample.java @@ -0,0 +1,117 @@ +package jp.co.jid.stringSample; + +import java.util.regex.Pattern; + +public class StringSample { + + public static void main(String[] args) { +// instanceSample(); +// concatSample(); +// stringBufferSample(); +// splitSample(); +// splitSample2(); +// replaceSample(); +// replaceAllSample(); +// indexOfSample(); + equalsSample(); + compileSample(); + } + + private static void instanceSample() { + String str1 = new String("ABC"); + String str2 = "123"; + + System.out.println(str1); + System.out.println(str2); + } + + private static void concatSample() { + String str1 = "ใ“ใฎๆ–‡ๅญ—ๅˆ—ใจ"; + String str2 = "ใ“ใฎๆ–‡ๅญ—ๅˆ—ใ‚’็ตๅˆใ—ใพใ™"; + System.out.println(str1.concat(str2)); + System.out.println(str1 + str2); + } + + private static void stringBufferSample() { + StringBuffer sb = new StringBuffer(); + sb.append("ใ“ใฎๆ–‡ๅญ—ๅˆ—ใจ"); + sb.append("ใ“ใฎๆ–‡ๅญ—ๅˆ—ใ‚’็ตๅˆใ—ใพใ™"); + String str = sb.toString(); + System.out.println(str); + } + + private static void splitSample() { + String str1 = "abc,def,ghi,jkl,mno"; + String[] str2 = str1.split(","); + for (String str3 : str2) { + System.out.println(str3); + } + } + + private static void splitSample2() { + String str1 = "abc def ghi jkl mno"; + String[] str2 = str1.split("\t"); + for (String str3 : str2) { + System.out.println(str3); + } + } + + private static void replaceSample() { + String str = "abcdef"; + System.out.println(str.replace("bcd", "BCD")); + } + + private static void replaceAllSample() { + String str = "abc123def123"; + System.out.println(str.replaceAll("[a-z]+", "0")); + System.out.println(str.replaceAll("[a-z]", "0")); + } + + private static void indexOfSample() { + String str = "abcdefg"; + System.out.println(str.indexOf("ef")); + System.out.println(str.indexOf("EF")); + } + + private static void equalsSample() { + String str1 = new String("abcde"); + String str2 = new String("abcde"); + if (str1.equals(str2)) { + System.out.println("ๆฏ”่ผƒ็ตๆžœใฏๅŒใ˜ใงใ™"); + } else { + System.out.println("ๆฏ”่ผƒ็ตๆžœใฏ้•ใ„ใพใ™"); + } + if (str1 == str2) { + System.out.println("ๆฏ”่ผƒ็ตๆžœใฏๅŒใ˜ใงใ™"); + } else { + System.out.println("ๆฏ”่ผƒ็ตๆžœใฏ้•ใ„ใพใ™"); + } + } + + private static void compileSample() { + String str1 = new String("abcde"); + String str2 = new String("abcde"); + String str3 = new String("bcd"); + + if (Pattern.compile(str1).matcher(str2).matches()) { + System.out.println("ๆฏ”่ผƒ็ตๆžœใฏๅŒใ˜ใงใ™"); + } else { + System.out.println("ๆฏ”่ผƒ็ตๆžœใฏ้•ใ„ใพใ™"); + } + if (Pattern.compile(str1).matcher(str3).matches()) { + System.out.println("ๆฏ”่ผƒ็ตๆžœใฏๅŒใ˜ใงใ™"); + } else { + System.out.println("ๆฏ”่ผƒ็ตๆžœใฏ้•ใ„ใพใ™"); + } + if (Pattern.compile(str3).matcher(str1).find()) { + System.out.println("ๆฏ”่ผƒ็ตๆžœใฏๅŒใ˜ใงใ™"); + } else { + System.out.println("ๆฏ”่ผƒ็ตๆžœใฏ้•ใ„ใพใ™"); + } + if (Pattern.compile(str1).matcher(str3).find()) { + System.out.println("ๆฏ”่ผƒ็ตๆžœใฏๅŒใ˜ใงใ™"); + } else { + System.out.println("ๆฏ”่ผƒ็ตๆžœใฏ้•ใ„ใพใ™"); + } + } +} diff --git a/java-learning/src/jp/co/jid/stringSample/stringSample.java b/java-learning/src/jp/co/jid/stringSample/stringSample.java deleted file mode 100644 index 58b01ae..0000000 --- a/java-learning/src/jp/co/jid/stringSample/stringSample.java +++ /dev/null @@ -1,117 +0,0 @@ -package jp.co.jid.stringSample; - -import java.util.regex.Pattern; - -public class stringSample { - - public static void main(String[] args) { - instanceSample(); - concatSample(); - stringBufferSample(); - splitSample(); - splitSample2(); - replaceSample(); - replaceAllSample(); - indexOfSample(); - equalsSample(); - compileSample(); - } - - private static void instanceSample() { - String str1 = new String("ABC"); - String str2 = "123"; - - System.out.println(str1); - System.out.println(str2); - } - - private static void concatSample() { - String str1 = "ใ“ใฎๆ–‡ๅญ—ๅˆ—ใจ"; - String str2 = "ใ“ใฎๆ–‡ๅญ—ๅˆ—ใ‚’้€ฃ็ตใ—ใพใ™"; - System.out.println(str1.concat(str2)); - System.out.println(str1 + str2); - } - - private static void stringBufferSample() { - StringBuffer sb = new StringBuffer(); - sb.append("ใ“ใฎๆ–‡ๅญ—ๅˆ—ใจ"); - sb.append("ใ“ใฎๆ–‡ๅญ—ๅˆ—ใ‚’้€ฃ็ตใ—ใพใ™"); - String str = sb.toString(); - System.out.println(str); - } - - private static void splitSample() { - String str1 = "abc,def,ghi,jkl,mno"; - String[] str2 = str1.split(","); - for (String str3 : str2) { - System.out.println(str3); - } - } - - private static void splitSample2() { - String str1 = "abc def ghi jkl mno"; - String[] str2 = str1.split("\t"); - for (String str3 : str2) { - System.out.println(str3); - } - } - - private static void replaceSample() { - String str = "abcdef"; - System.out.println(str.replace("bcd", "BCD")); - } - - private static void replaceAllSample() { - String str = "abc123def123"; - System.out.println(str.replaceAll("[a-z]+", "0")); - System.out.println(str.replaceAll("[a-z]", "0")); - } - - private static void indexOfSample() { - String str = "abcdefg"; - System.out.println(str.indexOf("ef")); - System.out.println(str.indexOf("EF")); - } - - private static void equalsSample() { - String str1 = "abcde"; - String str2 = "abcde"; - if (str1.equals(str2)) { - System.out.println("ๆฏ”่ผƒ็ตๆžœใฏๅŒใ˜ใงใ™"); - } else { - System.out.println("ๆฏ”่ผƒ็ตๆžœใฏ้•ใ„ใพใ™"); - } - if (str1 == str2) { - System.out.println("ๆฏ”่ผƒ็ตๆžœใฏๅŒใ˜ใงใ™"); - } else { - System.out.println("ๆฏ”่ผƒ็ตๆžœใฏ้•ใ„ใพใ™"); - } - } - - private static void compileSample() { - String str1 = "abcde"; - String str2 = "abcde"; - String str3 = "bcd"; - - if (Pattern.compile(str1).matcher(str2).matches()) { - System.out.println("ๆฏ”่ผƒ็ตๆžœใฏๅŒใ˜ใงใ™"); - } else { - System.out.println("ๆฏ”่ผƒ็ตๆžœใฏ้•ใ„ใพใ™"); - } - if (Pattern.compile(str1).matcher(str3).matches()) { - System.out.println("ๆฏ”่ผƒ็ตๆžœใฏๅŒใ˜ใงใ™"); - } else { - System.out.println("ๆฏ”่ผƒ็ตๆžœใฏ้•ใ„ใพใ™"); - } - if (Pattern.compile(str3).matcher(str2).find()) { - System.out.println("ๆฏ”่ผƒ็ตๆžœใฏๅŒใ˜ใงใ™"); - } else { - System.out.println("ๆฏ”่ผƒ็ตๆžœใฏ้•ใ„ใพใ™"); - } - if (Pattern.compile(str1).matcher(str3).find()) { - System.out.println("ๆฏ”่ผƒ็ตๆžœใฏๅŒใ˜ใงใ™"); - } else { - System.out.println("ๆฏ”่ผƒ็ตๆžœใฏ้•ใ„ใพใ™"); - } - } -} diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class new file mode 100644 index 0000000..be31229 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample1.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class new file mode 100644 index 0000000..4aaa734 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample2.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class new file mode 100644 index 0000000..c81ead4 --- /dev/null +++ b/java-learning/bin/jp/co/jid/arraySample/ArraySample3.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/arraySample/ArraySample4.class b/java-learning/bin/jp/co/jid/arraySample/ArraySample4.class new file mode 100644 index 0000000..e3a5d2f --- 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a/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class b/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class index b682f8f..4287ec1 100644 --- a/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class +++ b/java-learning/bin/jp/co/jid/classAndMethod/ClassAndMethod.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/exceptionSample/ExceptionSample.class b/java-learning/bin/jp/co/jid/exceptionSample/ExceptionSample.class new file mode 100644 index 0000000..6069b95 --- /dev/null +++ b/java-learning/bin/jp/co/jid/exceptionSample/ExceptionSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/ExtendsSample.class b/java-learning/bin/jp/co/jid/extendsSample/ExtendsSample.class new file mode 100644 index 0000000..971dbb9 --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/ExtendsSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/Food.class b/java-learning/bin/jp/co/jid/extendsSample/Food.class new file mode 100644 index 0000000..7cc9c1a --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/Food.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/Human.class b/java-learning/bin/jp/co/jid/extendsSample/Human.class new file mode 100644 index 0000000..a2a1c95 --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/Human.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/Programmer.class b/java-learning/bin/jp/co/jid/extendsSample/Programmer.class new file mode 100644 index 0000000..f91d072 --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/Programmer.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/extendsSample/Programmer2.class b/java-learning/bin/jp/co/jid/extendsSample/Programmer2.class new file mode 100644 index 0000000..f43b997 --- /dev/null +++ b/java-learning/bin/jp/co/jid/extendsSample/Programmer2.class Binary files 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b/java-learning/bin/jp/co/jid/stringSample/stringSample.class index b913694..ec6a0ba 100644 --- a/java-learning/bin/jp/co/jid/stringSample/stringSample.class +++ b/java-learning/bin/jp/co/jid/stringSample/stringSample.class Binary files differ diff --git a/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class new file mode 100644 index 0000000..ead71b8 --- /dev/null +++ b/java-learning/bin/jp/co/jid/wrapperSample/WrapperSample.class Binary files differ diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample1.java b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java new file mode 100644 index 0000000..efb748b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample1.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample1 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray[2]); + intArray[2] = 7; + System.out.println(intArray[2]); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample2.java b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java new file mode 100644 index 0000000..c9c24b3 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample2.java @@ -0,0 +1,10 @@ +package jp.co.jid.arraySample; + +public class ArraySample2 { + + public static void main(String[] args) { + int intArray[] = {1, 2, 3, 4, 5}; + System.out.println(intArray.length); + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample3.java b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java new file mode 100644 index 0000000..02c3683 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample3.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample3 { + + public static void main(String[] args) { + int array[][] = {{11, 12, 13}, {21, 22, 23}}; + for (int[] row : array) { + for (int element : row) { + System.out.print(element + "\t"); + } + System.out.print("\n"); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample4.java b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java new file mode 100644 index 0000000..7a18a4b --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample4.java @@ -0,0 +1,12 @@ +package jp.co.jid.arraySample; + +public class ArraySample4 { + + public static void main(String[] args) { + int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for (int element : array) { + System.out.println(element); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample5.java b/java-learning/src/jp/co/jid/arraySample/ArraySample5.java new file mode 100644 index 0000000..3d980b0 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample5.java @@ -0,0 +1,15 @@ +package jp.co.jid.arraySample; + +public class ArraySample5 { + + public static void main(String[] args) { + int array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for (int index = 0; index < array.length; index++) { + array[index] *= 2; + } + for (int element : array) { + System.out.println(element); + } + } + +} diff --git a/java-learning/src/jp/co/jid/arraySample/ArraySample6.java b/java-learning/src/jp/co/jid/arraySample/ArraySample6.java new file mode 100644 index 0000000..3f2da81 --- /dev/null +++ b/java-learning/src/jp/co/jid/arraySample/ArraySample6.java @@ -0,0 +1,14 @@ +package jp.co.jid.arraySample; + +public class ArraySample6 { + + public static void main(String[] args) { + int array[][] = {{11, 12, 13}, {21, 22, 23}}; + for (int i = 0; i < 2; i++) { + for (int j = 0; j < 3; j++) { + System.out.println(array[i][j]); + } + } + } + +} diff --git a/java-learning/src/jp/co/jid/classAndMethod/Calculation.java b/java-learning/src/jp/co/jid/classAndMethod/Calculation.java index 32964dc..923e482 100644 --- a/java-learning/src/jp/co/jid/classAndMethod/Calculation.java +++ b/java-learning/src/jp/co/jid/classAndMethod/Calculation.java @@ -11,6 +11,15 @@ return num1 + num2; } + public int plus(int... nums) { + System.out.println("ๅฏๅค‰้•ทๅผ•ๆ•ฐใฎๅˆ่จˆๅ€คใงใ™"); + int sum = 0; + for (int num : nums) { + sum += num; + } + return sum; + } + public int multiple(int num1, int num2) { int res = 0; for (int i = 0; i < num2; i++) { diff --git a/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java b/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java index ba5f4fb..7e386ee 100644 --- a/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java +++ b/java-learning/src/jp/co/jid/classAndMethod/ClassAndMethod.java @@ -3,15 +3,18 @@ public class ClassAndMethod { public static void main(String[] args) { -// Human human1 = new Human(); -// human1.printName(); -// Human human2 = new Human("็”ฐไธญ็ด‹ๆฌก้ƒŽ"); -// human2.printName(); + Human human1 = new Human(); + human1.printName(); + Human human2 = new Human("็”ฐไธญ็ด‹ๆฌก้ƒŽ"); + human2.printName(); Calculation calc = new Calculation(); System.out.println(calc.plus(2, 3)); -// System.out.println(calc.plus(2.0, 3.0)); -// System.out.println(calc.multiple(2, 3)); + System.out.println(calc.plus(2.0, 3.0)); + System.out.println(calc.multiple(2, 3)); + System.out.println(calc.plus(1, 2, 3)); + System.out.println(calc.plus(1, 2, 3, 4, 5)); + System.out.println(calc.plus(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)); } } diff --git a/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java b/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java new file mode 100644 index 0000000..1dd08a4 --- /dev/null +++ b/java-learning/src/jp/co/jid/exceptionSample/ExceptionSample.java @@ -0,0 +1,31 @@ +package jp.co.jid.exceptionSample; + +import java.util.ArrayList; + +public class ExceptionSample { + + public static void main(String[] args) { + ExceptionSample sample = new ExceptionSample(); + ArrayList list = null; + sample.nullPointerExceptionSample(list); + sample.classNotFoundExceptiopnSample("TestClass"); + sample.numberFormatExceptionSample("ABCDE"); + } + + public void nullPointerExceptionSample(ArrayList list) { + list.size(); + } + + public void classNotFoundExceptiopnSample(String className) { + try { + Class.forName(className).newInstance(); + } catch (InstantiationException | IllegalAccessException | ClassNotFoundException e) { + e.printStackTrace(); + } + } + + public void numberFormatExceptionSample(String numStr) { + Integer.valueOf(numStr); + } + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java b/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java new file mode 100644 index 0000000..2fe0d4e --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/ExtendsSample.java @@ -0,0 +1,18 @@ +package jp.co.jid.extendsSample; + +public class ExtendsSample { + + public static void main(String[] args) { + Programmer pg1 = new Programmer(); + pg1.setName("ๅฑฑ็”ฐๅคช้ƒŽ"); + pg1.setPgLanguage("Java"); + System.out.println(pg1.getName() + "ใ•ใ‚“ใฏ" + pg1.getPgLanguage() + "ใ‚’ไฝฟใ†ใ“ใจใŒใงใใพใ™"); + pg1.eat(new Food()); + + Programmer2 pg2 = new Programmer2(); + pg2.setName("้ˆดๆœจ่Šฑๅญ"); + pg2.setPgLanguage("C#"); + System.out.println(pg2.getName() + "ใ•ใ‚“ใฏ" + pg2.getPgLanguage() + "ใ‚’ไฝฟใ†ใ“ใจใŒใงใใพใ™"); + } + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Food.java b/java-learning/src/jp/co/jid/extendsSample/Food.java new file mode 100644 index 0000000..95c2556 --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Food.java @@ -0,0 +1,5 @@ +package jp.co.jid.extendsSample; + +public class Food { + +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Human.java b/java-learning/src/jp/co/jid/extendsSample/Human.java new file mode 100644 index 0000000..246500b --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Human.java @@ -0,0 +1,35 @@ +package jp.co.jid.extendsSample; + +import java.util.Date; + +public class Human { + private String name; + private int sex; + private Date birthday; + + public void walk() {} + public void unr() {} + public void eat(Food food) { + System.out.println("ๅฎถๆ—ๅ›ฃใ‚‰ใ‚“ใงๅ††ๅ“ใ‚’ๅ›ฒใ‚“ใงใ”้ฃฏใ‚’้ฃŸในใ‚‹"); + } + public void sleep() {} + + public String getName() { + return name; + } + public void setName(String name) { + this.name = name; + } + public int getSex() { + return sex; + } + public void setSex(int sex) { + this.sex = sex; + } + public Date getBirthday() { + return birthday; + } + public void setBirthday(Date birthday) { + this.birthday = birthday; + } +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Programmer.java b/java-learning/src/jp/co/jid/extendsSample/Programmer.java new file mode 100644 index 0000000..58bb117 --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Programmer.java @@ -0,0 +1,21 @@ +package jp.co.jid.extendsSample; + +public class Programmer extends Human { + private String pgLanguage; + + public void programing() {} + + @Override + public void eat(Food food) { + super.eat(food); + System.out.println("PCใซๅ‘ใ‹ใฃใฆไป•ไบ‹ใ‚’ใ—ใชใŒใ‚‰ใ”้ฃฏใ‚’้ฃŸในใ‚‹"); + } + + public String getPgLanguage() { + return pgLanguage; + } + + public void setPgLanguage(String pgLanguage) { + this.pgLanguage = pgLanguage; + } +} diff --git a/java-learning/src/jp/co/jid/extendsSample/Programmer2.java b/java-learning/src/jp/co/jid/extendsSample/Programmer2.java new file mode 100644 index 0000000..2b477fe --- /dev/null +++ b/java-learning/src/jp/co/jid/extendsSample/Programmer2.java @@ -0,0 +1,41 @@ +package jp.co.jid.extendsSample; + +import java.util.Date; + +public class Programmer2 { + private String name; + private int sex; + private Date birthday; + private String pgLanguage; + + public void walk() {} + public void unr() {} + public void eat(Food food) {} + public void sleep() {} + public void programing() {} + + public String getName() { + return name; + } + public void setName(String name) { + this.name = name; + } + public int getSex() { + return sex; + } + public void setSex(int sex) { + this.sex = sex; + } + public Date getBirthday() { + return birthday; + } + public void setBirthday(Date birthday) { + this.birthday = birthday; + } + public String getPgLanguage() { + return pgLanguage; + } + public void setPgLanguage(String pgLanguage) { + this.pgLanguage = pgLanguage; + } +} diff --git a/java-learning/src/jp/co/jid/interfaceSample/Calculation.java b/java-learning/src/jp/co/jid/interfaceSample/Calculation.java new file mode 100644 index 0000000..983ca36 --- /dev/null +++ b/java-learning/src/jp/co/jid/interfaceSample/Calculation.java @@ -0,0 +1,7 @@ +package jp.co.jid.interfaceSample; + +public interface Calculation { + default public int calc(int x, int y) { + return x + y; + } +} diff --git a/java-learning/src/jp/co/jid/interfaceSample/InterfaceSample.java b/java-learning/src/jp/co/jid/interfaceSample/InterfaceSample.java new file mode 100644 index 0000000..a51f835 --- /dev/null +++ b/java-learning/src/jp/co/jid/interfaceSample/InterfaceSample.java @@ -0,0 +1,15 @@ +package jp.co.jid.interfaceSample; + +public class InterfaceSample { + + public static void main(String[] args) { + Plus plus = new Plus(); + System.out.println(plus.calc(5, 2)); + Minus minus = new Minus(); + System.out.println(minus.calc(5, 2)); + + int[] nums = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + System.out.println(MathUtil.sum(nums)); + } + +} diff --git a/java-learning/src/jp/co/jid/interfaceSample/MathUtil.java b/java-learning/src/jp/co/jid/interfaceSample/MathUtil.java new file mode 100644 index 0000000..61dfc7c --- /dev/null +++ b/java-learning/src/jp/co/jid/interfaceSample/MathUtil.java @@ -0,0 +1,11 @@ +package jp.co.jid.interfaceSample; + +public interface MathUtil { + public static int sum(int... nums) { + int sum = 0; + for (int num : nums) { + sum += num; + } + return sum; + } +} diff --git a/java-learning/src/jp/co/jid/interfaceSample/Minus.java b/java-learning/src/jp/co/jid/interfaceSample/Minus.java new file mode 100644 index 0000000..aef30ed --- /dev/null +++ b/java-learning/src/jp/co/jid/interfaceSample/Minus.java @@ -0,0 +1,5 @@ +package jp.co.jid.interfaceSample; + +public class Minus implements Calculation { + +} diff --git a/java-learning/src/jp/co/jid/interfaceSample/Plus.java b/java-learning/src/jp/co/jid/interfaceSample/Plus.java new file mode 100644 index 0000000..24a36f4 --- /dev/null +++ b/java-learning/src/jp/co/jid/interfaceSample/Plus.java @@ -0,0 +1,8 @@ +package jp.co.jid.interfaceSample; + +public class Plus implements Calculation { + @Override + public int calc(int x, int y) { + return x + y; + } +} diff --git a/java-learning/src/jp/co/jid/repetiton/Repetiton3.java b/java-learning/src/jp/co/jid/repetiton/Repetiton3.java new file mode 100644 index 0000000..f5c63bb --- /dev/null +++ b/java-learning/src/jp/co/jid/repetiton/Repetiton3.java @@ -0,0 +1,15 @@ +package jp.co.jid.repetiton; + +public class Repetiton3 { + + public static void main(String[] args) { + int num = 1; + int sum = 0; + while (num <= 10) { + sum += num; + num++; + } + System.out.println(sum); + } + +} diff --git a/java-learning/src/jp/co/jid/repetiton/Repetiton4.java b/java-learning/src/jp/co/jid/repetiton/Repetiton4.java new file mode 100644 index 0000000..f780bbb --- /dev/null +++ b/java-learning/src/jp/co/jid/repetiton/Repetiton4.java @@ -0,0 +1,15 @@ +package jp.co.jid.repetiton; + +public class Repetiton4 { + + public static void main(String[] args) { + int num = 1; + int sum = 0; + do { + sum += num; + num++; + } while (num <= 10); + System.out.println(sum); + } + +} diff --git a/java-learning/src/jp/co/jid/stringSample/StringSample.java b/java-learning/src/jp/co/jid/stringSample/StringSample.java new file mode 100644 index 0000000..f40d9f3 --- /dev/null +++ b/java-learning/src/jp/co/jid/stringSample/StringSample.java @@ -0,0 +1,117 @@ +package jp.co.jid.stringSample; + +import java.util.regex.Pattern; + +public class StringSample { + + public static void main(String[] args) { +// instanceSample(); +// concatSample(); +// stringBufferSample(); +// splitSample(); +// splitSample2(); +// replaceSample(); +// replaceAllSample(); +// indexOfSample(); + equalsSample(); + compileSample(); + } + + private static void instanceSample() { + String str1 = new String("ABC"); + String str2 = "123"; + + System.out.println(str1); + System.out.println(str2); + } + + private static void concatSample() { + String str1 = "ใ“ใฎๆ–‡ๅญ—ๅˆ—ใจ"; + String str2 = "ใ“ใฎๆ–‡ๅญ—ๅˆ—ใ‚’็ตๅˆใ—ใพใ™"; + System.out.println(str1.concat(str2)); + System.out.println(str1 + str2); + } + + private static void stringBufferSample() { + StringBuffer sb = new StringBuffer(); + sb.append("ใ“ใฎๆ–‡ๅญ—ๅˆ—ใจ"); + sb.append("ใ“ใฎๆ–‡ๅญ—ๅˆ—ใ‚’็ตๅˆใ—ใพใ™"); + String str = sb.toString(); + System.out.println(str); + } + + private static void splitSample() { + String str1 = "abc,def,ghi,jkl,mno"; + String[] str2 = str1.split(","); + for (String str3 : str2) { + System.out.println(str3); + } + } + + private static void splitSample2() { + String str1 = "abc def ghi jkl mno"; + String[] str2 = str1.split("\t"); + for (String str3 : str2) { + System.out.println(str3); + } + } + + private static void replaceSample() { + String str = "abcdef"; + System.out.println(str.replace("bcd", "BCD")); + } + + private static void replaceAllSample() { + String str = "abc123def123"; + System.out.println(str.replaceAll("[a-z]+", "0")); + System.out.println(str.replaceAll("[a-z]", "0")); + } + + private static void indexOfSample() { + String str = "abcdefg"; + System.out.println(str.indexOf("ef")); + System.out.println(str.indexOf("EF")); + } + + private static void equalsSample() { + String str1 = new String("abcde"); + String str2 = new String("abcde"); + if (str1.equals(str2)) { + System.out.println("ๆฏ”่ผƒ็ตๆžœใฏๅŒใ˜ใงใ™"); + } else { + System.out.println("ๆฏ”่ผƒ็ตๆžœใฏ้•ใ„ใพใ™"); + } + if (str1 == str2) { + System.out.println("ๆฏ”่ผƒ็ตๆžœใฏๅŒใ˜ใงใ™"); + } else { + System.out.println("ๆฏ”่ผƒ็ตๆžœใฏ้•ใ„ใพใ™"); + } + } + + private static void compileSample() { + String str1 = new String("abcde"); + String str2 = new String("abcde"); + String str3 = new String("bcd"); + + if (Pattern.compile(str1).matcher(str2).matches()) { + System.out.println("ๆฏ”่ผƒ็ตๆžœใฏๅŒใ˜ใงใ™"); + } else { + System.out.println("ๆฏ”่ผƒ็ตๆžœใฏ้•ใ„ใพใ™"); + } + if (Pattern.compile(str1).matcher(str3).matches()) { + System.out.println("ๆฏ”่ผƒ็ตๆžœใฏๅŒใ˜ใงใ™"); + } else { + System.out.println("ๆฏ”่ผƒ็ตๆžœใฏ้•ใ„ใพใ™"); + } + if (Pattern.compile(str3).matcher(str1).find()) { + System.out.println("ๆฏ”่ผƒ็ตๆžœใฏๅŒใ˜ใงใ™"); + } else { + System.out.println("ๆฏ”่ผƒ็ตๆžœใฏ้•ใ„ใพใ™"); + } + if (Pattern.compile(str1).matcher(str3).find()) { + System.out.println("ๆฏ”่ผƒ็ตๆžœใฏๅŒใ˜ใงใ™"); + } else { + System.out.println("ๆฏ”่ผƒ็ตๆžœใฏ้•ใ„ใพใ™"); + } + } +} diff --git a/java-learning/src/jp/co/jid/stringSample/stringSample.java b/java-learning/src/jp/co/jid/stringSample/stringSample.java deleted file mode 100644 index 58b01ae..0000000 --- a/java-learning/src/jp/co/jid/stringSample/stringSample.java +++ /dev/null @@ -1,117 +0,0 @@ -package jp.co.jid.stringSample; - -import java.util.regex.Pattern; - -public class stringSample { - - public static void main(String[] args) { - instanceSample(); - concatSample(); - stringBufferSample(); - splitSample(); - splitSample2(); - replaceSample(); - replaceAllSample(); - indexOfSample(); - equalsSample(); - compileSample(); - } - - private static void instanceSample() { - String str1 = new String("ABC"); - String str2 = "123"; - - System.out.println(str1); - System.out.println(str2); - } - - private static void concatSample() { - String str1 = "ใ“ใฎๆ–‡ๅญ—ๅˆ—ใจ"; - String str2 = "ใ“ใฎๆ–‡ๅญ—ๅˆ—ใ‚’้€ฃ็ตใ—ใพใ™"; - System.out.println(str1.concat(str2)); - System.out.println(str1 + str2); - } - - private static void stringBufferSample() { - StringBuffer sb = new StringBuffer(); - sb.append("ใ“ใฎๆ–‡ๅญ—ๅˆ—ใจ"); - sb.append("ใ“ใฎๆ–‡ๅญ—ๅˆ—ใ‚’้€ฃ็ตใ—ใพใ™"); - String str = sb.toString(); - System.out.println(str); - } - - private static void splitSample() { - String str1 = "abc,def,ghi,jkl,mno"; - String[] str2 = str1.split(","); - for (String str3 : str2) { - System.out.println(str3); - } - } - - private static void splitSample2() { - String str1 = "abc def ghi jkl mno"; - String[] str2 = str1.split("\t"); - for (String str3 : str2) { - System.out.println(str3); - } - } - - private static void replaceSample() { - String str = "abcdef"; - System.out.println(str.replace("bcd", "BCD")); - } - - private static void replaceAllSample() { - String str = "abc123def123"; - System.out.println(str.replaceAll("[a-z]+", "0")); - System.out.println(str.replaceAll("[a-z]", "0")); - } - - private static void indexOfSample() { - String str = "abcdefg"; - System.out.println(str.indexOf("ef")); - System.out.println(str.indexOf("EF")); - } - - private static void equalsSample() { - String str1 = "abcde"; - String str2 = "abcde"; - if (str1.equals(str2)) { - System.out.println("ๆฏ”่ผƒ็ตๆžœใฏๅŒใ˜ใงใ™"); - } else { - System.out.println("ๆฏ”่ผƒ็ตๆžœใฏ้•ใ„ใพใ™"); - } - if (str1 == str2) { - System.out.println("ๆฏ”่ผƒ็ตๆžœใฏๅŒใ˜ใงใ™"); - } else { - System.out.println("ๆฏ”่ผƒ็ตๆžœใฏ้•ใ„ใพใ™"); - } - } - - private static void compileSample() { - String str1 = "abcde"; - String str2 = "abcde"; - String str3 = "bcd"; - - if (Pattern.compile(str1).matcher(str2).matches()) { - System.out.println("ๆฏ”่ผƒ็ตๆžœใฏๅŒใ˜ใงใ™"); - } else { - System.out.println("ๆฏ”่ผƒ็ตๆžœใฏ้•ใ„ใพใ™"); - } - if (Pattern.compile(str1).matcher(str3).matches()) { - System.out.println("ๆฏ”่ผƒ็ตๆžœใฏๅŒใ˜ใงใ™"); - } else { - System.out.println("ๆฏ”่ผƒ็ตๆžœใฏ้•ใ„ใพใ™"); - } - if (Pattern.compile(str3).matcher(str2).find()) { - System.out.println("ๆฏ”่ผƒ็ตๆžœใฏๅŒใ˜ใงใ™"); - } else { - System.out.println("ๆฏ”่ผƒ็ตๆžœใฏ้•ใ„ใพใ™"); - } - if (Pattern.compile(str1).matcher(str3).find()) { - System.out.println("ๆฏ”่ผƒ็ตๆžœใฏๅŒใ˜ใงใ™"); - } else { - System.out.println("ๆฏ”่ผƒ็ตๆžœใฏ้•ใ„ใพใ™"); - } - } -} diff --git a/java-learning/src/jp/co/jid/wrapperSample/WrapperSample.java b/java-learning/src/jp/co/jid/wrapperSample/WrapperSample.java new file mode 100644 index 0000000..edcf1c7 --- /dev/null +++ b/java-learning/src/jp/co/jid/wrapperSample/WrapperSample.java @@ -0,0 +1,34 @@ +package jp.co.jid.wrapperSample; + +public class WrapperSample { + + public static void main(String[] args) { + autoBoxing(); + unBoxing(); + } + + private static void autoBoxing() { + System.out.println("-- ใ‚ชใƒผใƒˆใƒœใ‚ฏใ‚ทใƒณใ‚ฐ -----"); + int intNum = 10; + Integer integerNum1 = new Integer(intNum); + Integer integerNum2 = Integer.valueOf(intNum); + Integer integerNum3 = intNum; + System.out.println(intNum); + System.out.println(integerNum1.toString()); + System.out.println(integerNum2.toString()); + System.out.println(integerNum3.toString()); + } + + private static void unBoxing() { + System.out.println("-- ใ‚ขใƒณใƒœใ‚ฏใ‚ทใƒณใ‚ฐ -------"); + Integer integerNum = new Integer(10); + int intNum1 = integerNum.intValue(); + int intNum2 = (int)integerNum; + int intNum3 = integerNum; + System.out.println(integerNum.toString()); + System.out.println(intNum1); + System.out.println(intNum2); + System.out.println(intNum3); + } + +}