定時任務

public class Task {  
    public static void main(String[] args) {  
        Runnable runnable = new Runnable() {  
            public void run() {  
                // task to run goes here  
                System.out.println("Hello !!");  
            }  
        };  
        ScheduledExecutorService service = Executors  
                .newSingleThreadScheduledExecutor();  
        // 第二个参数为首次执行的延时时间，第三个参数为定时执行的间隔时间  
        service.scheduleAtFixedRate(runnable, 10, 1, TimeUnit.SECONDS);  
    }  
}