Timer timer=new Timer(); 
           [color=#FF0000]timer.schedule[/color](new TimeTask(),1800000, 1800000);

ScheduledExecutorService scheduler=Executors.newScheduledThreadPool(1);
scheduler.scheduleAtFixedRate(new LimitSmorcGatherService(), 1, 2, TimeUnit.SECONDS);
LimitSmorcGatherService实现Runnable接口就好了

------解决方案--------------------
import java.util.Timer;
import java.util.TimerTask;

class MyTimerTask extends TimerTask {
 public void run() {
   System.out.println("Timer task executed.");
 }
}

public class MainClass {
 public static void main(String args[]) {
   MyTimerTask myTask = new MyTimerTask();
   Timer myTimer = new Timer();

   /*
    * Set an initial delay of 1 second, then repeat every half second.
    */
   myTimer.schedule(myTask, 1000, 500);

   try {
     Thread.sleep(5000);
   } catch (InterruptedException exc) {
   }

   myTimer.cancel();
 }
}