public class MidaPlayerKnoledge extends JFrame {
public void fuanch(){
JMenu menu=new JMenu("打开");
JMenuItem it1=new JMenuItem("退出");
JMenuItem it=new JMenuItem("打开");
menu.add(it);
menu.add(it1);
menu.addActionListener(new LIsener());
Panel panel=new Panel();
this.setBounds(50, 50, 100, 100);
JMenuBar menubar=new JMenuBar();
menubar.add( menu);
this.add(menubar);
this.setVisible(true);
} public static void main(String[] args) {
new MidaPlayerKnoledge().fuanch();
}
class LIsener implements ActionListener{
public void actionPerformed(ActionEvent e) {
if(e.getActionCommand().equals("退出"));{
dispose ();
return;
}
}
} }