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

public class ComboBoxCellRendererDemo extends JApplet {
  private final static int NUMBER_OF_NATIONS = 7;
  private String[] nations = new String[] {"Denmark",
    "Germany", "China", "India", "Norway", "UK", "US"};
  private ImageIcon[] icons = new ImageIcon[NUMBER_OF_NATIONS];
  private ImageIcon[] bigIcons = new ImageIcon[NUMBER_OF_NATIONS];

  // Create a combo box model
  private DefaultComboBoxModel model = new DefaultComboBoxModel();

  // Create a combo box with the specified model
  private JComboBox jcboCountries = new JComboBox(model);

  // Create a list cell renderer
  private MyListCellRenderer renderer = new MyListCellRenderer();

  // Create a label for displaying iamge
  private JLabel jlblImage = new JLabel("", JLabel.CENTER);

  /** Construct the applet */
  public ComboBoxCellRendererDemo() {
    // Load small and large image icons
    for (int i = 0; i < NUMBER_OF_NATIONS; i++) {
      icons[i] = new ImageIcon(getClass().getResource(
        "/image/flagIcon" + i + ".gif"));
      model.addElement(new Object[]{icons[i], nations[i]});

      bigIcons[i] = new ImageIcon(getClass().getResource(
        "/image/flag" + i + ".gif"));
    }

    // Set list cell renderer for the combo box
    jcboCountries.setRenderer(renderer);
    jlblImage.setIcon(bigIcons[0]);
    add(jcboCountries, java.awt.BorderLayout.NORTH);
    add(jlblImage, java.awt.BorderLayout.CENTER);

    // Register listener
    jcboCountries.addActionListener(new ActionListener() {
      public void actionPerformed(java.awt.event.ActionEvent e) {
        jlblImage.setIcon(bigIcons[jcboCountries.getSelectedIndex()]);
      }
    });
  }

  /** Main method */
  public static void main(String[] args) {
    ComboBoxCellRendererDemo applet = new ComboBoxCellRendererDemo();
    JFrame frame = new JFrame();
    //EXIT_ON_CLOSE == 3
    frame.setDefaultCloseOperation(3);
    frame.setTitle("ComboBoxCellRendererDemo");
    frame.getContentPane().add(applet, BorderLayout.CENTER);
    applet.init();
    applet.start();
    frame.setSize(400,320);
    frame.setLocationRelativeTo(null);
    frame.setVisible(true);
  }
}