java最简单的定时器实现

 import java.util.Timer;

 import java.util.TimerTask;

 public class T extends TimerTask {
 private String jobName = "";
 public T(String jobName) {
 super();
 this.jobName = jobName;
 }


 @Override

 public void run() {

 System.out.println("execute " + jobName);

 }

 public static void main(String[] args) {

 Timer timer = new Timer();

 long delay1 = 1 * 1000;

 long period1 = 1000;

 // 从现在开始 1 秒钟之后，每隔 1 秒钟执行一次 job1

 timer.schedule(new T("job1"), delay1, period1);

 long delay2 = 2 * 1000;

 long period2 = 2000;

 // 从现在开始 2 秒钟之后，每隔 2 秒钟执行一次 job2

 timer.schedule(new T("job2"), delay2, period2);

 }

 }