CheckBox - how to set custom icons

Question

I need to figure out how to set a custom icon for a selected checkbox via the UIManager
This works for un-selected checkboxes:
UIManager.put("CheckBox.icon", new ImageIcon("../images/unselectedCheckBoxIcon.png")));
how to change the icon when it is selected?
I don't know the UIManager property for a selected checkbox icon and using the setSelectedIcon on the checkbox object it self does not seem to work:
checkbox.setSelectedIcon(new ImageIcon("../images/selectedCheckBoxIcon.png"));
Thanks for any ideas how to solve this!!

Answer 1

Hi mKorbel, many thanks for your suggestion!
For anyone interestsed,
here is a small example of how I made it working.
Unfortunately I cannot attatch the icon images that I use, but the selected icon can be downloaded from here, resize it to 32*32, remove the cross in the middle to save it as the unselected icon.
* Modified sample code taken from here
* http://www.java2s.com/Tutorial/Java/0240__Swing/CustomizingJCheckBoxCheckMarkIcon.htm
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.Color;
import java.awt.Component;
import java.awt.Graphics;
import java.awt.GridLayout;
import java.net.URL;
import javax.swing.AbstractButton;
import javax.swing.ButtonModel;
import javax.swing.Icon;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
public class IconCheckBoxSample {
  public static void main(String[] args) {
        JFrame frame = new JFrame("Iconizing CheckBox");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        Icon checked = new CheckBoxIcon();
        Icon unchecked = new CheckBoxIcon();
        JCheckBox aCheckBox1 = new JCheckBox("Pizza", unchecked);
        aCheckBox1.setSelectedIcon(checked);
        JCheckBox aCheckBox2 = new JCheckBox("Calzone");
        aCheckBox2.setIcon(unchecked);
        aCheckBox2.setSelectedIcon(checked);
        Icon checkBoxIcon = new CheckBoxIcon();
        JCheckBox aCheckBox3 = new JCheckBox("Anchovies", checkBoxIcon);
        JCheckBox aCheckBox4 = new JCheckBox("Stuffed Crust", checked);
        frame.setLayout(new GridLayout(0,1));
        frame.add(aCheckBox1);
        frame.add(aCheckBox2);
        frame.add(aCheckBox3);
        frame.add(aCheckBox4);
        frame.setSize(300, 200);
        frame.setVisible(true);
class CheckBoxIcon implements Icon {
  public void paintIcon(Component component, Graphics g, int x, int y) {
    AbstractButton abstractButton = (AbstractButton)component;
    ButtonModel buttonModel = abstractButton.getModel();
    if(buttonModel.isSelected()) 
        g.drawImage(createImage("../images/selectedCheckBoxIcon.png","info"), x, y, component);
    else
        g.drawImage(createImage("../images/unselectedCheckBoxIcon.png","info"), x, y, component);
  public int getIconWidth() {
    return 33;
  public int getIconHeight() {
    return 33;
  protected static Image createImage(String path, String description) {
        URL imageURL = CheckBoxIcon.class.getResource(path);
        Image icn = null;
        if (imageURL == null) {
            if(null==icn){
                //System.out.println("path: "+path);
                icn = new ImageIcon (CheckBoxIcon.class.getResource(path.replace("..",""))).getImage();
                if(null!=icn)
                    return icn;
                else{ 
                    System.err.println("Resource not found: " + path);
                    return null;
             return null;
        } else {
            return (new ImageIcon(imageURL, description)).getImage();