java break停止外层循环和continue继续外层循环

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停止外层循环

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public class Test {
    public static void main(String[] args) {
        out:for (int i = 0; i < 3; i++) {
            System.out.println("out:" + i);
            for (int j = 0; j < 3; j++) {
                if(i == 1 && j == 1) {
                    break out;
                }
                System.out.println("  in:" + j);
            }
        }
    }
}

Click and drag to move

输出如下，可以看到(i == 1 && j == 1)条件满足后，内外层循环都停止了

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out:0
  in:0
  in:1
  in:2
out:1
  in:0

Click and drag to move

继续外层循环

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public class Test {
    public static void main(String[] args) {
        out:for (int i = 0; i < 3; i++) {
            System.out.println("out:" + i);
            for (int j = 0; j < 3; j++) {
                if(i == 1 && j == 1) {
                    continue out;
                }
                System.out.println("  in:" + j);
            }
        }
    }
}

Click and drag to move

结果如下，可以看到(i == 1 && j == 1)条件满足后，该次的内层循环停止了，回到外层循环继续

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out:0
  in:0
  in:1
  in:2
out:1
  in:0
out:2
  in:0
  in:1
  in:2

Click and drag to move

停止多层循环

同理可以跳出或者继续多层的循环，只要在要跳出或继续的循环出设置标识即可

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public class Test {
    public static void main(String[] args) {
        out:for (int i = 0; i < 3; i++) {
            System.out.println("out:" + i);
            for (int j = 0; j < 3; j++) {
                System.out.println("  in:" + j);
                for (int k = 0; k < 3; k++) {
                    System.out.println("    inner:" + k);
                    if(i == 1 && j == 1 && k== 1) {
                        break out;
                    }
                }
            }
        }
    }
}

Click and drag to move

输出结果如下

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out:0
  in:0
    inner:0
    inner:1
    inner:2
  in:1
    inner:0
    inner:1
    inner:2
  in:2
    inner:0
    inner:1
    inner:2
out:1
  in:0
    inner:0
    inner:1
    inner:2
  in:1
    inner:0
    inner:1

Click and drag to move

继续多层循环类似，就不贴代码了