package com.wuming.state;import java.text.SimpleDateFormat;
import java.util.Date;//模拟倒计时
public class TestSleep2 {public static void main(String[] args) {/*      try {tenDown();} catch (InterruptedException e) {e.printStackTrace();}*//*        10987654321*///打印当前系统时间Date startTime = new Date(System.currentTimeMillis());//获取系统当前时间while(true){try {Thread.sleep(1000);System.out.println(new SimpleDateFormat("HH:mm:ss").format(startTime));startTime=new Date(System.currentTimeMillis());//更新当前时间} catch (InterruptedException e) {e.printStackTrace();}}}//模拟倒计时public static void tenDown() throws InterruptedException {int num=10;while(true){Thread.sleep(1000);System.out.println(num--);if (num<=0){break;}}}
}

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