public class test5三重循环 {
    public static void main(String[] args) throws InterruptedException {
        // 小时循环
        for (int h = 0; h < 24; h++) {
            // 每一个小时有60个分钟
            for (int m = 0; m < 60; m++) {
                // 每一分钟会有60个秒
                for (int s = 0; s < 60; s++) {
                    String msg = String.format("%s:%s:%s", h, m, s);
                    System.out.println(msg);
                    Thread.sleep(10);// alt + enter
                }
            }
        }
    }
}

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