Image instead of a button

[kimi lynn]

Hello everybody,
I've a simple GUI and instead of the standard text appearing on the buttons, I would like to put an image.Could somebody please tell me how can i do that in the follwing piece of code.
Many many thanks

  
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
import java.net.*;
public class MatlabRC
extends JFrame
implements ActionListener
{
private
String StartEng = "Start Matlab-Engine";
String StopEng = "Stop Matlab-Engine";
String GetVarS = "Get Variable";
String SetVarS = "Set Variable";
String StartRC = "Start Matlab in Server";
String StopRC = "Stop Matlab in Server";
String SendCmd = "Implement Command on Remote Computer";
MatEng engine;
Socket MatlabRCSocket;
DataInputStream in;
DataOutputStream out;
boolean remote = false;
JTextField command;
byte[] array;
public MatlabRC()
{
super ("Matlab Remote Control");
JPanel cmdPanel = new JPanel();
JPanel onoff = new JPanel();
JPanel getset = new JPanel();
JLabel label = new JLabel (">>");
MatlabRCServer th = new MatlabRCServer();
th.start();
cmdPanel.add (label);
command = new JTextField(50);
command .setToolTipText ("Give a Matlab-Command");
cmdPanel.add(command);
cmdPanel.setBorder (BorderFactory.createEtchedBorder());
getContentPane().add ("North",cmdPanel);
JButton start = new JButton(StartEng);
onoff.add("Center",start);
JButton stop = new JButton(StopEng);
onoff.add("Center",stop);
JButton startRC = new JButton(StartRC);
onoff.add("South",startRC);
JButton stopRC = new JButton(StopRC);
onoff.add("South",stopRC);
JButton GetVar = new JButton(GetVarS);
getset.add("Center",GetVar);
JButton SetVar = new JButton(SetVarS);
getset.add("Center",SetVar);
getContentPane().add("South",getset);
getContentPane().add("Center",onoff);
command.addActionListener(this);
start.addActionListener(this);
stop.addActionListener(this);
GetVar.addActionListener(this);
SetVar.addActionListener(this);
stopRC.addActionListener(this);
startRC.addActionListener(this);
addWindowListener(new MainWindowAdapter());
}

[Joe Ess]

The Swing Tutorial details how to make a JButton display an image.