JCombobox Renderer Question

Question

I am trying to use a custom renderer for a jcombobox in order to show combobox items in different font color. I get a DefaultListCellRenderer and update it according to my needs (setting font color). When I run the application, the combobox is populated properly. When I select one of the items (say "Red") from the combobox, the item gets selected, but the after the selection the font color of the item that is selected defaults to black (instead of red here). What should I do so that after selecting the item, the selected item is shown in the appropriated font color as indicated by custom renderer.
Here is the code for the custom renderer.
    private class ColorCmbRenderer implements ListCellRenderer {
        protected DefaultListCellRenderer defaultRenderer = new DefaultListCellRenderer();
        private final Dimension preferredSize = new Dimension(50, 23);
        public Component getListCellRendererComponent(JList list, Object value,
                                                    int index, boolean isSelected,
                                                    boolean cellHasFocus) {
        JLabel renderer = (JLabel) defaultRenderer.getListCellRendererComponent(list, value, index,
                                                    isSelected, cellHasFocus);
            switch (index) {
                case 0: renderer.setText("Black");
                        renderer.setForeground(Color.BLACK);
                        break;
                case 1: renderer.setText("Red");
                        renderer.setForeground(Color.RED);
                        break;
                case 2: renderer.setText("Blue");
                        renderer.setForeground(Color.BLUE);
                        break;
                case 3: renderer.setText("Green");
                        renderer.setForeground(Color.GREEN);
                        break;
                default: break;
            renderer.setPreferredSize(preferredSize);
            return renderer;
    }Another thing that I wanted to know is whether each of the items in the jcombobox can be associated with individual Action objects by using something like setAction(new HTMLEditorKit.BoldAction()).
regards,
Nirvan.

Answer 1

There are 3 foregrounds to be set.import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import javax.swing.*;
import javax.swing.plaf.basic.BasicComboBoxRenderer;
public class ComboColors {
   JComboBox comboBox;
   public static void main(String[] args) {
      SwingUtilities.invokeLater(new Runnable() {
         @Override
         public void run() {
            new ComboColors().makeUI();
   public void makeUI() {
      comboBox = new JComboBox(
            new Object[]{"BLACK", "RED", "BLUE", "GREEN"});
      comboBox.setRenderer(new BasicComboBoxRenderer() {
         private final Color[] colors = {
            Color.BLACK, Color.RED, Color.BLUE, Color.GREEN
         @Override
         public Component getListCellRendererComponent(JList list, Object value,
               int index, boolean isSelected, boolean cellHasFocus) {
            super.getListCellRendererComponent(list, value,
                  index, isSelected, cellHasFocus);
            if (index == -1) {
               index = comboBox.getSelectedIndex();
            setForeground(colors[index]);
            list.setSelectionForeground(colors[index]);
            comboBox.setForeground(colors[index]);
            return this;
      JFrame frame = new JFrame();
      frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      frame.add(comboBox);
      frame.add(new JButton("Dummy"), BorderLayout.SOUTH);
      frame.pack();
      frame.setLocationRelativeTo(null);
      frame.setVisible(true);
}db