PopupMenu trong Java AWT

public class PopupMenu extends Menu implements MenuContainer, Accessible

package vn.kienthuclaptrinh.awt;

import java.awt.Frame;
import java.awt.MenuItem;
import java.awt.PopupMenu;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

public class PopupMenuExample {

    public PopupMenuExample() {
        final Frame frame = new Frame("Ví dụ PopupMenu trong Java AWT");
        final PopupMenu popupmenu = new PopupMenu("Edit");
        MenuItem cut = new MenuItem("Cut");
        cut.setActionCommand("Cut");
        MenuItem copy = new MenuItem("Copy");
        copy.setActionCommand("Copy");
        MenuItem paste = new MenuItem("Paste");
        paste.setActionCommand("Paste");
        popupmenu.add(cut);
        popupmenu.add(copy);
        popupmenu.add(paste);
        frame.addMouseListener(new MouseAdapter() {
            public void mouseClicked(MouseEvent e) {
                popupmenu.show(frame, e.getX(), e.getY());
            }
        });
        frame.add(popupmenu);
        frame.setSize(400, 300);
        frame.setLayout(null);
        frame.setVisible(true);
    }

    public static void main(String args[]) {
        new PopupMenuExample();
    }
}