Java by API/java.util/TimerTask

extends TimerTask

/*
 * Output:
Timer task executed.
Timer task executed.
Timer task executed.
Timer task executed.
Timer task executed. */
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();
  }
}