GUI菜单练习

import java.awt.*;
import java.awt.event.*;

public class MyMenuDemo {

private Frame f;
private MenuBar mb;
private Menu m,subMenu;
private MenuItem closeItem,subItem;

public MyMenuDemo()
{
init();
}

public void init()
{
f=new Frame("my window");
f.setBounds(200, 100, 500, 400);

mb=new MenuBar();
m=new Menu("编辑");
subMenu=new Menu("子菜单");
closeItem=new MenuItem("关闭");
subItem=new MenuItem("子条目");
mb.add(m);
m.add(subMenu);
m.add(closeItem);
subMenu.add(subItem);

f.setMenuBar(mb);
f.setVisible(true);
myEvent();
}

public void myEvent()
{
f.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{
System.exit(0);
}
});

closeItem.addActionListener(new ActionListener()
{
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
System.exit(0);
}
});
}

public static void main(String[] args) {
// TODO Auto-generated method stub

new MyMenuDemo();
}

}