import javax.swing.Timer;
...
//Будет вызыватся каждую секунду
timer=new Timer(1000,new ActionListener(
                     public void actionPerformed(ActionEvent ev) {
                       System.out.println("WOW!");
                      }
                     ));
timer.start();

 javax.swing.Timer timer = new javax.swing.Timer( 100, new ActionListener()
  {
    public void actionPerformed(ActionEvent e)
    {
    //Do work!
    }
  } );

  java.util.Timer timer2 = new java.util.Timer();
  TimerTask task = new TimerTask() {
    public void run()
    {
    //Do work!
    }
  };
  timer2.schedule( task, 100 );
  timer2.schedule( task, date ); //date - java.util.Date