1、上代码：

public class ScheduledExecutorServiceDeom {
	
	public static void main(String[] args) {
		ScheduledExecutorService ses = Executors.newScheduledThreadPool(10);
		ses.scheduleAtFixedRate(new Runnable() {
			
			public void run() {
				try {
					Thread.sleep(1000);
					System.out.println(System.currentTimeMillis()/1000);
				} catch(Exception e) {
					e.printStackTrace();
				}
			}
			
		}, 0, 2, TimeUnit.SECONDS);
	}
}public class ScheduledExecutorServ