用Executor发送心跳命令

[java]代码库

public static void main(String[] args) {
	ScheduledExecutorService ses = Executors.newScheduledThreadPool(1);
	Runnable pinger = new Runnable() {
		public void run() {
			System.out.println("PING!");
		}
	};
 
	ses.scheduleAtFixedRate(pinger, 5, 5, TimeUnit.SECONDS);
}