如何让程序休眠.。。。。。。。。。。。

Question

应该是用线程
Thread.sleep(30000)

Answer 1

定时运行：
public static void initTimer( String className,long queryTime )
  {
    Timer timer = new Timer();
    TimerTask task = SyncControl.getInstance(className);
    timer.schedule(task,0,queryTime);
  }============================================
public class TimerRobot extends Thread{
    //private long interval = 60000*60*12; //12Сʱ
    private long interval = 60000*3; //12Сʱ
    public TimerRobot(){}
    public TimerRobot(long interval){
        this.interval = interval;
    }
    public void run() { 
        try{ 
            while(true){
                sleep(interval);
                work();
            }
        } catch (Exception e){} 
    }
    public void work(){}
}