How to disable certain items in a JComboBox

Question

I have a ComboBox in which I have 8 Items out of which I want to display all but on a certain condition, the user should only be able to select the first two of the

Answer 1

To solve @Samsotha 's code "problem" where disabled items are still selectable, I found and adapted a code which works fine for this purpose. Here is a working example on how you can call it and use it in similar way to a JComboBox:

import java.awt.Component;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.ListCellRenderer;
import javax.swing.UIManager;
import javax.swing.plaf.basic.BasicComboBoxRenderer;

/**
 * Creates a util class to generate a JComboBox with enabled/disabled items.
 * Strongly adapted from original post of Joris Van den Bogaert at http://esus.com/disabling-some-of-the-elements-in-a-jcombobox/
 */

@SuppressWarnings({ "unchecked" })
public class MyComboBox extends JComboBox