class TwoDimArr {
public static void main(String[] args) {
int[][] arr = new int[3][]; //二维数组 动态初始化
arr[0] = new int[3];
arr[1] = new int[5];
arr[2] = new int[2];
arr[0][0] = 10;
arr[1][0] = 50;
int[][] arr1 = {{1, 2, 3}, {2, 4, 6, 8, 10}, {3, 5}}; //二维数组 静态初始化
System.out.println(arr[0][0]);
System.out.println(arr1[1][0]);
}
}
输出结果:
10
2