初学定时器任务每秒输出时间

import java.util.Timer;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.TimerTask;

class MyTask extends TimerTask
{
   
    SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
   
    public void run(){
        System.out.println(sdf.format(new Date()));
    }
}

public class t1{
   
    public static void main(String[] args)
    {
       
        MyTask myTask = new MyTask();
       
        Timer timer = new Timer();
       
        timer.schedule(myTask, 2000, 1000);// 2秒后开始启动任务,以后每秒执行一次.
        
        System.out.println("main end");
    }
   
}