SimpleMenus.java Source code

Introduction

Here is the source code for SimpleMenus.java

Source

// : c14:SimpleMenus.java
// <applet code=SimpleMenus width=200 height=75></applet>
// From 'Thinking in Java, 3rd ed.' (c) Bruce Eckel 2002
// www.BruceEckel.com. See copyright notice in CopyRight.txt.

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

import javax.swing.JApplet;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JTextField;

public class SimpleMenus extends JApplet {
    private JTextField t = new JTextField(15);

    private ActionListener al = new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            t.setText(((JMenuItem) e.getSource()).getText());
        }
    };

    private JMenu[] menus = { new JMenu("Winken"), new JMenu("Blinken"), new JMenu("Nod") };

    private JMenuItem[] items = { new JMenuItem("Fee"), new JMenuItem("Fi"), new JMenuItem("Fo"),
            new JMenuItem("Zip"), new JMenuItem("Zap"), new JMenuItem("Zot"), new JMenuItem("Olly"),
            new JMenuItem("Oxen"), new JMenuItem("Free") };

    public void init() {
        for (int i = 0; i < items.length; i++) {
            items[i].addActionListener(al);
            menus[i % 3].add(items[i]);
        }
        JMenuBar mb = new JMenuBar();
        for (int i = 0; i < menus.length; i++)
            mb.add(menus[i]);
        setJMenuBar(mb);
        Container cp = getContentPane();
        cp.setLayout(new FlowLayout());
        cp.add(t);
    }

    public static void main(String[] args) {
        run(new SimpleMenus(), 200, 75);
    }

    public static void run(JApplet applet, int width, int height) {
        JFrame frame = new JFrame();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.getContentPane().add(applet);
        frame.setSize(width, height);
        applet.init();
        applet.start();
        frame.setVisible(true);
    }
} ///:~