package com.han;import java.awt.BorderLayout;import java.awt.Container;import java.awt.event.MouseAdapter;import java.awt.event.MouseEvent;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JMenu;import javax.swing.JMenuItem;import javax.swing.JPopupMenu;public class JPopupMenu_1 extends JFrame {	/**	 * 	 */	private static final long serialVersionUID = 2924353502687938030L;	public JPopupMenu_1() {		// TODO Auto-generated constructor stub		final JPopupMenu popupMenu = new JPopupMenu();		JMenuItem menuItem1 = new JMenuItem("剪切");		JMenuItem menuItem2 = new JMenuItem("复制");		JMenuItem menuItem3 = new JMenuItem("粘贴");		JMenu menuSub = new JMenu ("编辑");		JMenuItem menuSubItem1 = new JMenuItem("只读");		JMenuItem menuSubItem2 = new JMenuItem("可写");		JMenu menuSubSub = new JMenu("字体");		menuSub.add(menuSubItem1);		menuSub.add(menuSubItem2);		menuSub.add(menuSubSub);		JMenuItem menuSubSubItem1 = new JMenuItem("加粗");		JMenuItem menuSubSubItem2 = new JMenuItem("倾斜");		menuSubSub.add(menuSubSubItem1);		menuSubSub.add(menuSubSubItem2);				popupMenu.add(menuItem1);		popupMenu.add(menuItem2);		popupMenu.add(menuItem3);		popupMenu.add(menuSub);				JLabel label = new JLabel("请在这里单击鼠标右键！");				Container container = getContentPane();		container.add(label, BorderLayout.CENTER);				// MouseAdapter (abstract class) is different from 		// the MouseListener (interface). The interest of the abstract class		// is that we need not to override all the methods declared in 		// the corresponding interface.		container.addMouseListener(new MouseAdapter() { 			public void mouseReleased(MouseEvent e) {				if (e.isPopupTrigger()) {					popupMenu.show(e.getComponent(), e.getX(), e.getY());					}			}					});	}	/**	 * @param args	 */	public static void main(String[] args) {		// TODO Auto-generated method stub		JPopupMenu_1 frame = new JPopupMenu_1();		frame.setTitle("创建弹出式菜单");		frame.setVisible(true);		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);		frame.setBounds(100, 100, 400, 300);	}}