배열

1차원 그룹

class Array {
    public static void main(String[] args) {

        int[] a = new int[5];

        for (int i = 0; i < a.length; i++){
            a[i] = i + 1;
        }

        for (int i = 0; i < a.length; i++){
            System.out.println("a[" + i + "] = " + a[i]);
        }
    } 
}

【実行結果】
a[0]=1
a[1]=2
a[2]=3
a[3]=4
a[4]=5

다차원 그룹

class A2 {
    public static void main(String[] args) {

            int[][] x = new int[2][4];

            for (int i = 0; i < 2; i++) {
                for (int j = 0; j < 4; j++) {
                    x[i][j] = j + 1;
                    System.out.println("x[" + i + "][" + j + "] = " + x[i][j]);
                }
            }
    } 
} 

【実行結果】
x[0][0] = 1
x[0][1] = 2
x[0][2] = 3
x[0][3] = 4
x[1][0] = 1
x[1][1] = 2
x[1][2] = 3
x[1][3] = 4