For example, the following applet puts the text of each menu item selected
in the text field theChoice.
import java.applet.*;
import java.awt.*;
import java.awt.event.*;
public class ActiveMenuTester extends Applet implements ActionListener {
TextField theChoice = new TextField(20);
public void init () {
Frame f = new Frame("Simple Window");
f.add("North", new Label("Look at the Menus", Label.CENTER));
f.add("South", theChoice);
f.setSize(300, 200);
f.setLocation(220,240);
MenuBar myMenuBar = new MenuBar();
this.makeFileMenu(myMenuBar);
this.makeEditMenu(myMenuBar);
f.setMenuBar(myMenuBar);
f.addWindowListener(new WindowCloser());
f.show();
}
protected void addItem(Menu m, String s) {
MenuItem mi = new MenuItem(s);
mi.addActionListener(this);
m.add(mi);
}
protected void makeEditMenu(MenuBar mb) {
Menu editMenu = new Menu("Edit");
this.addItem(editMenu, "Undo");
editMenu.addSeparator();
this.addItem(editMenu, "Cut");
this.addItem(editMenu, "Copy");
this.addItem(editMenu, "Paste");
this.addItem(editMenu, "Clear");
mb.add(editMenu);
}
protected void makeFileMenu(MenuBar mb) {
Menu fileMenu = new Menu("File");
this.addItem(fileMenu, "New");
this.addItem(fileMenu, "Open...");
fileMenu.addSeparator();
this.addItem(fileMenu, "Close");
this.addItem(fileMenu, "Save");
this.addItem(fileMenu, "Save As...");
fileMenu.addSeparator();
this.addItem(fileMenu, "Page Setup...");
this.addItem(fileMenu, "Print");
fileMenu.addSeparator();
this.addItem(fileMenu, "Quit");
mb.add(fileMenu);
}
public void actionPerformed(ActionEvent e) {
theChoice.setText(e.getActionCommand());
}
class WindowCloser extends WindowAdapter {
public void windowClosing(WindowEvent e) {
Window w = (Window) e.getSource();
w.setVisible(false);
w.dispose();
}
}
}