ComboBoxWithItemChangedListener.java Source code

Introduction

Here is the source code for ComboBoxWithItemChangedListener.java

Source

import java.awt.BorderLayout;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class ComboBoxWithItemChangedListener extends JFrame {
    public static void main(String[] args) {
        ComboBoxWithItemChangedListener that = new ComboBoxWithItemChangedListener();
        that.setVisible(true);
    }

    public ComboBoxWithItemChangedListener() {
        setSize(450, 350);

        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        getContentPane().add(new ComboPanel(), BorderLayout.SOUTH);
    }
}

class ComboPanel extends JPanel {
    final static String[] treasure = { "Gold", "Silver", "Diamonds", "Rubies", "Emeralds", "Sapphires",
            "Chocolate" };

    public ComboPanel() {
        final JComboBox combo = new JComboBox(treasure);
        combo.setMaximumRowCount(5);
        combo.addItemListener(new ItemListener() {
            public void itemStateChanged(ItemEvent e) {
                System.out.println("Combo: " + combo.getSelectedItem());
            }
        });
        combo.setSelectedIndex(4);
        add(combo);
    }
}