Create Array of JButtons

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

class XButton extends JButton{

private String whichbutton;

public XButton(){
this("rubberbutton");
}

public XButton(String whichbutton){
this.whichbutton = whichbutton; 
}

public XButton(String name, String whichbutton){
super(name);
this.whichbutton = whichbutton; 
}
public String getButton(){return whichbutton;}
}

public class X{
static JLabel jl; 
public static void main(String[] args){
JButton[] jb = new JButton[3]; 
jb[0] = new XButton(); 
jb[1] = new XButton("metalbutton");
jb[2] = new XButton("Cork Button","corkbutton");

JFrame jf = new JFrame(); 
Container c = jf.getContentPane();
JPanel p1 = new JPanel();
JPanel p2 = new JPanel();
jl = new JLabel(); 

for(int i = 0; i < jb.length; ++i){ 
jb[i].addActionListener(new ButtonListener());
p1.add(jb[i]);
}
p2.add(jl);
c.add(p1,BorderLayout.NORTH); 
c.add(p2,BorderLayout.SOUTH); 

jf.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent evt){
System.exit(0);
}
});

jf.setSize(400,300); 
jf.setVisible(true);

}
static class ButtonListener implements ActionListener{ 
public void actionPerformed(ActionEvent evt){
XButton xb = (XButton) evt.getSource() ; 
jl.setText("Button " + xb.getButton() + " was pressed");
}
}
}