import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class TimerTest extends JFrame implements ActionListener {
    int counter = 0;
    JLabel theLabel;
    
    public TimerTest() {
	super("timer test");
	
	//Create a timer that will call 'this' once per second.
	Timer t = new Timer( 1000, this );
	//Start the timer.
	t.start();
	
	//A label that will be updated by the timer.
	theLabel = new JLabel( "", theLabel.CENTER );
	
	getContentPane().add( theLabel, BorderLayout.CENTER);
	addWindowListener(new WindowAdapter() {
		public void windowClosing(WindowEvent e) {
		    System.exit(0);
		}
	    });
	setSize(300, 200);
	setVisible(true);
    }
    
    public void actionPerformed( ActionEvent e ) {
	//This method is called when the timer goes off.
	
	//Update the label.
	theLabel.setText( "Det har nu gått " + counter++ + " sekunder" );
    }
    
    public static void main(String args[]) {
	new TimerTest();
    }
    
}