import java.util.Timer;

import java.util.TimerTask;

public static void main(String[] args) {

   //简单定时器

   Timer time = new Timer();

   TimerTask task = new TimerTask(){

   @Override

   public void run() {

    System.out.println("1秒执行一次的task");

   }

 };

 time.schedule(task, 1000, 1000);

}