Showing a Timer as it runs...

Question

Does anyone know how to display a Timer as it runs....
For a card game, a person's score will decrement every 10 seconds... but I want to show the time running from the start of the game until the end.
I have a labe set up, and I initiated a swing Timer with an ActionListener that uses setText for the label but I dont see any kind of getCurrentTime() method or something that will make it look like this:
Time of Game: 00:00
Any ideas?

Answer 1

Is this getting on the right track?
   import java.io.*;
   import java.awt.*;
   import java.awt.event.*;
   import javax.swing.*;
    public class Scoreboard extends JPanel
      private int moves,score;
          private long startTime;
      private JLabel movesLabel,scoreLabel,timeLabel;
      private Timer timer;
      private TimerListener timerlistener;
       public Scoreboard()
         moves = 0;
         score = 0;
         startTime = System.currentTimeMillis();
         timerlistener = new TimerListener();
         timer = new Timer(100,timerlistener);
         timer.start();
         movesLabel = new JLabel("Number of Moves: " + moves);
         scoreLabel = new JLabel("Score: " + score);
         timeLabel = new JLabel("Time: " + timer.toString());
         makePanel();
       private class TimerListener implements ActionListener
          public void actionPerformed(ActionEvent e)
            timeLabel.setText("Time: " + (startTime - System.currentTimeMillis()));
            setScore(-1);
            try
               Thread.sleep(10000000); // sleep so we have time to see the action occur
                catch(Exception exception)
       private void makePanel()
         add(movesLabel);
         add(scoreLabel);
         add(timeLabel);
       public void addMove()
         moves++;
         movesLabel.setText("Number of Moves: " + moves);
       public void setScore(int add_sub)
         if(add_sub==1)
            score+=100;
            scoreLabel.setText("Score: " + score);
         else if(add_sub==-1)
            if(score>=25)
               score-=25;
               scoreLabel.setText("Score: " + score);
            else
               score=0;
               scoreLabel.setText("Score: " + score);
   }