MenuTest.java Source code

Introduction

Here is the source code for MenuTest.java

Source

import javax.swing.ButtonGroup;
import javax.swing.JCheckBoxMenuItem;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JRadioButtonMenuItem;
import javax.swing.event.MenuEvent;
import javax.swing.event.MenuListener;

public class MenuTest extends JFrame {
    public MenuTest() {
        super();

        MenuListener listener = new MenuListener() {
            public void menuCanceled(MenuEvent e) {
                dumpInfo("Canceled", e);
            }

            public void menuDeselected(MenuEvent e) {
                dumpInfo("Deselected", e);
            }

            public void menuSelected(MenuEvent e) {
                dumpInfo("Selected", e);
            }

            private void dumpInfo(String s, MenuEvent e) {
                JMenu menu = (JMenu) e.getSource();
                System.out.println(s + ": " + menu.getText());
            }
        };

        JMenu fileMenu = new JMenu("File");
        fileMenu.addMenuListener(listener);
        fileMenu.add(new JMenuItem("Open"));
        fileMenu.add(new JMenuItem("Close"));
        fileMenu.add(new JMenuItem("Exit"));
        JMenu helpMenu = new JMenu("Help");
        helpMenu.addMenuListener(listener);
        helpMenu.add(new JMenuItem("About MenuTest"));
        helpMenu.add(new JMenuItem("Class Hierarchy"));
        helpMenu.addSeparator();
        helpMenu.add(new JCheckBoxMenuItem("Balloon Help"));
        JMenu subMenu = new JMenu("Categories");
        subMenu.addMenuListener(listener);
        JRadioButtonMenuItem rb;
        ButtonGroup group = new ButtonGroup();
        subMenu.add(rb = new JRadioButtonMenuItem("A Little Help", true));
        group.add(rb);
        subMenu.add(rb = new JRadioButtonMenuItem("A Lot of Help"));
        group.add(rb);
        helpMenu.add(subMenu);
        JMenuBar mb = new JMenuBar();
        mb.add(fileMenu);
        mb.add(helpMenu);
        setJMenuBar(mb);
    }

    public static void main(String args[]) {
        JFrame frame = new MenuTest();
        frame.setSize(300, 300);
        frame.show();
    }
}