java 多线程-sleep模拟网络延迟，倒计时

Posted 2022-06-20

//sleep模拟网络延迟：

public class hh implements Runnable 

public static void main(String[]args) throws InterruptedException

    Date date=new Date(System.currentTimeMillis()+1000*10);//当前时间加10秒
    long endTime=date.getTime();
    while(true)
    
        System.out.println(new SimpleDateFormat("mm:ss").format(date));//以分:秒的形式输出
        Thread.sleep(1000);
        date=new Date(date.getTime()-1000);
        if(endTime-1000*10>date.getTime())
        
            break;
        

    


public static void test() throws InterruptedException

    int num=10;
    while(true)
    
        Thread.sleep(1000);
        System.out.println(num--);