foreach遍历二维数组

package controller;

import java.util.Arrays;

public class DoubleArray {
    public static void main(String[] args) {
        String[][] str = {{"1", "2"}, {"3", "4", "5"}, {"6"}, {"7", "0"}};
        System.out.println("str = " + str);
        System.out.println("");
        System.out.println("Arrays.toString(str) = " + Arrays.toString(str));

        for (String[] s : str) {
            System.out.println("");
            for (String x : s) {
                System.out.println("x = " + x);
            }
            System.out.println("s = " + s);
            System.out.println("Arrays.toString(s) = " + Arrays.toString(s));
        }
    }
}