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import java.util.Timer;
import java.util.TimerTask;
public class TestTimer {
 
    static Timer timer = null; 
    public static void main(String[] args) {
        timer = new Timer();
           System.out.println("-----------定時(shí)間器已經(jīng)啟動(dòng)。。。。。。");
           timer.schedule(new TimerTask() {
              @Override
              public void run() {
              System.out.println("運(yùn)行我了哦！！！");
           }
        }, 0, 5*1000);
    }
}

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

import java.util.Timer;
import java.util.TimerTask;
public class TestTimer {

    public static void main(String[] args) {
       SimpleDateFormat sdf = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
       try {
         Date datetime = sdf .parse("2007/07/31 23:59:00");
         timer = new Timer();
         System.out.println("-----------定時(shí)間器已經(jīng)啟動(dòng)。。。。。。");
         timer.scheduleAtFixedRate(new TimerTask() {
             @Override
             public void run() {
                System.out.println("scheduleAtFixedRate -----test");
             }
         }, datetime , 5*1000);
     } catch (ParseException e) {
        e.printStackTrace();
     }
  }