Java开发 菜单栏

package expression;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;

import javax.swing.ButtonGroup;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;

import org.omg.CORBA.PRIVATE_MEMBER;

public class Text extends JFrame{
	//final ButtonGroup buttonGroup = new ButtonGroup();
	
	public static void main(String[] args){
		Text frame = new Text();
		frame.setVisible(true);
	}
	
	public  Text() {
		super();
		setBounds(200, 200, 500, 500);
		setDefaultCloseOperation(EXIT_ON_CLOSE);
		setTitle("自定义菜单");
		
		
		JMenuBar menuBar = new JMenuBar();//菜单栏
		setJMenuBar(menuBar);//给窗体添加菜单栏
		
		JMenu menu1 = new JMenu("文件");//创建菜单对象
		menuBar.add(menu1);
		
		JMenuItem menuItem1 = new JMenuItem("新建");//创建菜单项对象
		menuItem1.addActionListener(new ItemListener());//添加监听
		menu1.add(menuItem1);
		
		menu1.addSeparator();//添加分隔符
		
		JMenu openMenu = new JMenu("打开");
		menu1.add(openMenu);//菜单中添加菜单 
		
		JMenuItem opennew = new JMenuItem("打开新文件");
		opennew.addActionListener(new ItemListener());
		JMenuItem openold = new JMenuItem("打开旧文件");
		openold.setEnabled(false);
		
		openMenu.add(opennew);
		openMenu.addSeparator();
		openMenu.add(openold);

		menu1.addSeparator();
		
		JMenuItem kpItem = new JMenuItem("保存（S）");
		kpItem.setMnemonic(KeyEvent.VK_S);//添加快捷键
		kpItem.addActionListener(new ItemListener());
		menu1.add(kpItem);
		
		menu1.addSeparator();
		
		JMenuItem exItem = new JMenuItem("退出(E)");
		exItem.setMnemonic(KeyEvent.VK_E);
		exItem.addActionListener(new ItemListener());
		menu1.add(exItem);
		
		Icon icon = new ImageIcon("src/save_as.png");
		kpItem.setIcon(icon);//设置图标
	}
	private class ItemListener implements ActionListener{//监听

		@Override
		public void actionPerformed(ActionEvent e) {
			// TODO Auto-generated method stub
			JMenuItem pI = (JMenuItem)e.getSource();//返回触发动作的组件
							//强制转换
			System.out.println(pI.getText()+"成功");
		}
		
		
	}

}