How to color an item in a JComboBox?

Question

I need to color some item of my JComboBox,.
or color the string text or the background of the single item
anyone can help me?

Answer 1

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Test3 extends JFrame {
  public Test3() {
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    Container content = getContentPane();
    Object[] data = { new ColoredObject(Color.RED,"Hello"),
                      new ColoredObject(Color.BLUE,"World,"),
                      new ColoredObject(Color.CYAN,"These"),
                      new ColoredObject(Color.GREEN,"Are"),
                      new ColoredObject(Color.MAGENTA,"Some"),
                      new ColoredObject(Color.ORANGE,"Colors")
    JComboBox jcb = new JComboBox(data);
    jcb.setRenderer(new ColoredRenderer());
    content.add(jcb, BorderLayout.NORTH);
    setSize(300, 300);
    setVisible(true);
  public static void main(String[] arghs) { new Test3(); }
class ColoredObject {
  Color color;
  Object object;
  public ColoredObject(Color color, Object object) {
    this.color=color;
    this.object=object;
  public Object getObject() { return object; }
  public Color getColor() { return color; }
  public String toString() { return object.toString(); }
class ColoredRenderer extends DefaultListCellRenderer {
  public Component getListCellRendererComponent(JList list, Object value,
                                                int index, boolean isSelected,
                                                boolean hasFocus) {
    Component c = super.getListCellRendererComponent(list, value, index,
        isSelected,hasFocus);
    if (!isSelected && !hasFocus && value instanceof  ColoredObject) {
      c.setBackground(((ColoredObject)value).getColor());
    return c;
}