两招教你跳出多重嵌套循环？

public static void main(String[] args) {
    ok:
    for (int i = 0; i < 100; i++) {
        for (int l = 0; l < 100; l++) {
            if (l == 20) {
                break ok;
            }
        }
    }
}

public static void main(String[] args) {
    boolean found = false;//为true跳出循环
    for (int i = 0; i < 100 && !found; i++) {
        System.out.println(i);
        if (i == 5) {
            found = true;
            break;
        }
    }
}