Java Programming Tutorial - 69 - Drop Down List Program

package apples;

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

public class Gui extends JFrame {

 private JComboBox box;

 private JLabel picture;

 private static String[] filename = {"b.png", "x.png"};

 private Icon[] pics = {new ImageIcon (getClass().getResource(filename[0]))};

 public Gui() {

super ("the title");

setLayout (new FlowLayout());

 

box = new JComboBox(filename); 

 

box.addItemListener(

new ItemListener() {

 

public void itemStateChanged (ItemEvent event) {

if(event.getStateChange()== ItemEvent.SELECTED)

picture.setIcon(pics[box.getSelectedIndex()]);

}

}

);

add(box); 

picture = new JLabel (pics[0]);

add(picture);

}

}

package apples;

import javax.swing.JFrame;

public class apples  {

public static void main (String[] args) {

Gui go = new Gui();

go.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 

go.setSize(300, 200);

go.setVisible(true);

} 

 }