在使用 break 或 contine 的时候可以指定停止那一段的代码块

class Main {
    public static void main(String[] args) {
        outer:
        {
            for (int i = 0; i < 10; i++) {
                System.out.println("i = " + i);
                if (i == 5) {
                    break outer;
                }
            }

            System.out.println("This will not be printed because we broke out of the outer block.");
        }

        System.out.println("Exited the outer block.");
    }
}