Changing The ImageIcon Of a JButton With a click

[Koh Khai Huat]

Hi guys,

I am working in a applet program and it require the user to click the button and then change the button's image to a different image how do u go about doing that. I am open to all suggestion and advice on how i am going to slove this problem, Thanks in advance

regards,
KKH

[Vasu Reddy]

Hi,

Please go through the below program.


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

public class ActionExample extends Applet implements ActionListener
{

private JButton testButton;
private int test =1;
private ImageIcon testButtonIcon2;

public void init()
{
ImageIcon testButtonIcon1 = new ImageIcon("test1.gif");
testButtonIcon2 = new ImageIcon("test2.gif");

setLayout(new FlowLayout());
// testButton = new JButton("Test");
//testButton.setBackground(Color.blue);

testButton = new JButton(testButtonIcon1);
add(testButton);

testButton.addActionListener(this);

}


public void paint(Graphics g)
{

testButton.setBackground(Color.blue);
if(test != 1) {
//testButton.setBackground(Color.orange);
testButton.setIcon(testButtonIcon2);
}

}

public void actionPerformed(ActionEvent evt)
{

if (evt.getSource() == testButton)
test++;
repaint();
}

}

[Jeff Albertson]

Just have an action listener that sets the icon. No need to override paint:

import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.net.*;
import javax.swing.*;
 
public class IconSwitcher {
public static void main(String[] args) throws MalformedURLException {
final Icon icon1 = new ImageIcon(new URL(""));
final Icon icon2 = new ImageIcon(new URL(""));
final JButton btn = new JButton(icon1);
btn.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e) {
btn.setIcon(btn.getIcon()==icon1? icon2 : icon1);
}
});
 
final JFrame f = new JFrame("IconSwitcher");
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.getContentPane().add(btn);
EventQueue.invokeLater(new Runnable(){
public void run() {
f.pack();
f.setLocationRelativeTo(null);
f.setVisible(true);
}
});
}
}

[ February 08, 2006: Message edited by: Jeff Albertson ]