import java.awt.BorderLayout;

import javax.swing.JFrame;
import javax.swing.JMenuBar;
import javax.swing.JMenu;
import javax.swing.JMenuItem;
import javax.swing.KeyStroke;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.JTextArea;
import java.awt.*;
import javax.swing.JScrollPane;

/**
 * <p>Title: </p>
 *
 * <p>Description: </p>
 *
 * <p>Copyright: Copyright (c) 2006</p>
 *
 * <p>Company: </p>
 *
 * @author not attributable
 * @version 1.0
 */
public class keyMenuDemo extends JFrame {
    JMenuBar jMenuBar1 = new JMenuBar();
    JMenu jMenu1 = new JMenu();
    JMenuItem jMenuItem1 = new JMenuItem();
    JMenuItem jMenuItem2 = new JMenuItem();
    JMenuItem jMenuItem3 = new JMenuItem();
    //滾動(dòng)面板
    JScrollPane jScrollPane1 = new JScrollPane();
    JTextArea jTextArea1 = new JTextArea();
    public keyMenuDemo() {
        try {
            jbInit();
        } catch (Exception exception) {
            exception.printStackTrace();
        }
    }
    private void jbInit() throws Exception {
        getContentPane().setLayout(null);
        jTextArea1.setText("");

        this.setJMenuBar(jMenuBar1);
        jMenu1.setText("文件(F)");
        //添加快捷鍵
        jMenu1.setMnemonic('F');

        jMenuItem1.setText("打開");
        jMenuItem2.setText("保存");
        jMenuItem3.setText("退出");
        //添加加速鍵打開
        jMenuItem2.setAccelerator(KeyStroke.getKeyStroke('N',
                java.awt.Event.CTRL_MASK, false));
        jScrollPane1.setBounds(new Rectangle(42, 117, 344, 166));

        jMenuBar1.add(jMenu1);
        //添加加速鍵保存
        //如果為shift的話
        // jMenuItem1.setAccelerator(KeyStroke.getKeyStroke('L',
        //                java.awt.Event.SHIFT_MASK, false));
        jMenuItem1.setAccelerator(KeyStroke.getKeyStroke('S',
                java.awt.Event.CTRL_MASK, false));
        //添加快捷鍵退出

        jMenu1.add(jMenuItem1);
        jMenu1.add(jMenuItem2);
        jMenu1.add(jMenuItem3);
        this.getContentPane().add(jScrollPane1);
        //添加文本區(qū)到滾動(dòng)面板
        jScrollPane1.getViewport().add(jTextArea1);
        jMenuItem1.addActionListener(new keylistener(this));
        jMenuItem2.addActionListener(new keylistener(this));
        jMenuItem3.addActionListener(new keylistener(this));
    }
    public static void main(String[] args) {
        keyMenuDemo keymenudemo = new keyMenuDemo();
        keymenudemo.setSize(430, 350);
        keymenudemo.setVisible(true);
    }
}
class keylistener implements ActionListener {
    keyMenuDemo ke;
    public keylistener(keyMenuDemo ke) {
        this.ke = ke;
    }
    public void actionPerformed(ActionEvent e) {
        if (e.getActionCommand().equals("退出")) {
            System.exit(0);
        } else if (e.getActionCommand().equals("打開")) {
            ke.jTextArea1.setText(e.getActionCommand());
        } else if (e.getActionCommand().equals("保存")) {
            ke.jTextArea1.setText(e.getActionCommand());
        }
    }
}