String time = new SimpleDateFormat("HH:mm:ss").format(new Date());

System.out.println("Start time : " + time);

ScheduledThreadPoolExecutor executor = new ScheduledThreadPoolExecutor(

5); // 创建5个执行线程

Runnable runnable = new Runnable() {

@Override

public void run() {

// TODO Auto-generated method stub

String time = new SimpleDateFormat("HH:mm:ss")

.format(new Date());

System.out.println("Now Time : " + time);

}

};

executor.scheduleWithFixedDelay(runnable, 2, 3, TimeUnit.SECONDS);