class JavaTest{

    public static void main(String[] args){

        //获取当前时间距离 1970-01-01 00:00:00的毫秒数

        long start = System.currentTimeMillis();

        System.out.println(start);

        label : for(int i = 1; i <= 4; i++){

            System.out.print("第" + i + "次循环 :");

            flag:for(int j = 1; j <= 5; j++){

                if(j <= i){

                    System.out.print(j + " ");

                }else{

                    System.out.print("\n");

                    //break flag;

                    continue flag;

                }

            }

        }

    }

}