Mega Code Archive
Simple Menus
<![CDATA[
// : 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);
}
} ///:~
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