package com.ygl.sys;
import java.text.SimpleDateFormat;
 import java.util.Date;public class TT {
  public static void main(String[] args) throws Exception {
   Date endTime=new Date(System.currentTimeMillis()+10*1000);
    long end=endTime.getTime();
    while(true){
     //输出
     System.out.print(new SimpleDateFormat("mm:ss").format(endTime) );
     //构建下一秒
     endTime=new Date(endTime.getTime()-1000);
     Thread.sleep(1000);
     if(end-10000>endTime.getTime()){
      break;
     }
    }
     
  }
 }