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

public class Driver
{
     public static final int WIDTH = 300;
     public static final int HEIGHT = 200;
     public static void main (String [] args)
     {
           MyFrame aFrame = new MyFrame ();
           aFrame.setSize (WIDTH,HEIGHT);
           JButton aButton = new JButton("Press me.");
           // Anonymous object/class
           aButton.addActionListener(new ActionListener() {
                                     public void actionPerformed(ActionEvent e) {
	               JButton aButton = (JButton) e.getSource();
                 aButton.setText("Stop pressing me!");
              }
           });
           aFrame.add(aButton);
           aFrame.setVisible(true);
     }
}