import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.Component;
import java.awt.Container;


public class MyButtonListener implements ActionListener
{
    // Different message appears in the Frame depending on
    // buttom pressesed. Identify button using the 
    // "actionCommand"
    public void actionPerformed(ActionEvent e)
    {
	    JButton aButton = (JButton) e.getSource();	
	    MyFrame aFrame = (MyFrame) aButton.getRootPane().getParent();   
         String temp = aButton.getActionCommand();
         if(temp.equalsIgnoreCase(MyFrame.B1IDENTIFIER))
            aFrame.setTitle("Button 1 pressed");
         else if(temp.equalsIgnoreCase(MyFrame.B2IDENTIFIER))
            aFrame.setTitle("Button 2 pressed");

    }
}