Java Swing右键菜单

import java.awt.Frame;
import java.awt.Rectangle;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

import javax.swing.JMenuItem;
import javax.swing.JPopupMenu;

public class RightMenu extends Frame{
	private JPopupMenu menu = new JPopupMenu();
	
	public RightMenu() {
		this.setBounds(new Rectangle(500,400));
		this.setLocationRelativeTo(null);
		this.setVisible(true);
		menu.setVisible(true);
		this.RightMouse();
		this.add(menu);
		
	}
	public void RightMouse() {
		  JMenuItem mAll, mCopy, mCut, mPaste, mDel;
		  menu = new JPopupMenu();
		  mAll = new JMenuItem("全选(A)");
		  menu.add(mAll);
		  mCopy = new JMenuItem("复制(C)");
		  menu.add(mCopy);
		  mCut = new JMenuItem("剪切(T)");
		  menu.add(mCut);
		  mPaste = new JMenuItem("粘贴(P)");
		  menu.add(mPaste);
		  mDel = new JMenuItem("删除(D)");
		  menu.add(mDel);
		  this.addMouseListener(new MouseAdapter() {
		   public void mouseClicked(MouseEvent e) {
		    if (e.getButton()==MouseEvent.BUTTON3) {
		     //弹出右键菜单
		     menu.show(RightMenu.this, e.getX(), e.getY());
		    }
		   }   
		  });
		  mAll.addActionListener(new ActionListener() {   
		   public void actionPerformed(ActionEvent e) {
		    System.out.println("点击了全选菜单");
		   }
		  });
		  
		 }
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		new RightMenu();
	}

}