Change images every 2 seconds

I am adding bits so if anyone has any ideas this would be helpful. So the program is currently compiling and running, but I don't know how to end it. I am using eclipse. What I want to do is when I run the program to change 4 different images every 2 seconds, so if you have any advice don't hesitate. Here is the program.

/** Here is the GUI of the program
 * class name SlideShowGui.java
 * @author Kiril Anastasov
 * @date 07/03/2012
 */

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

public class SlideShowGui extends JPanel implements ActionListener 
{
    JLabel name, comments, images;
    JTextField namejtf, commentsjtf, captionjtf;
    JButton submit;
    ImageIcon pictures, pictures2, pictures3, pictures4;
    boolean go = true;

    SlideShowGui()
    {
        name = new JLabel("Name:");
        this.add(name);

        namejtf = new JTextField(15);
        this.add(namejtf);

        comments = new JLabel("Comments:");
        this.add(comments);

        commentsjtf = new JTextField(15);
        this.add(commentsjtf);

        submit = new JButton("Submit");
        this.add(submit);
        submit.addActionListener(this);
        pictures = new ImageIcon("galileo1.jpg");
        images = new JLabel(pictures);

        pictures2 = new ImageIcon("galileo2.jpg");
        pictures3 = new ImageIcon("galileo3.jpg");
        pictures4 = new ImageIcon("galileo4.jpg");
        this.add(images);

        captionjtf = new JTextField(24);
        this.add(captionjtf);

    }

    public void actionPerformed(ActionEvent ae)
    {

    }
}

      

        
        
        
      

    

/**The driver class of the program. Here is the JFrame 
 * class name TestSlideShow.java
 * @author Kiril Anastasov
 * @date 07/03/2012
 */

import java.awt.*;
import javax.swing.*;
public class TestSlideShow 
{
    public static void main(String[] args) 
    {
        JFrame application = new JFrame();
        SlideShowGui panel = new SlideShowGui();
        application.add(panel);
        application.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        application.setSize(300,600);
        application.setLocation(400,100);
        application.setVisible(true);


    }

}