import javax.swing.*; import java.awt.event.*; import java.awt.*; public class Exec66 extends JFrame implements ActionListener{ JTextField text; static int i=0; public Exec66() { this.setTitle("Test"); this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); this.setBounds(100, 100, 200, 300); this.setLocationRelativeTo(null); JMenuBar bar = new JMenuBar(); JMenu file = new JMenu("文件"); JMenu edit = new JMenu("编辑"); JMenu help = new JMenu("帮助"); JMenuItem f1 = new JMenuItem("OPEN"); JMenuItem f2 = new JMenuItem("保存"); JMenuItem f3 = new JMenuItem("退出"); JMenuItem e1 = new JMenuItem("复制"); JMenuItem e2 = new JMenuItem("粘贴"); JMenuItem e3 = new JMenuItem("全选"); JMenuItem h1 = new JMenuItem("帮助"); JMenuItem h2 = new JMenuItem("关于"); f1.setMnemonic('O'); f1.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_N,InputEvent.CTRL_MASK)); f1.addActionListener(this); f2.addActionListener(this); f3.addActionListener(this); e1.addActionListener(this); e2.addActionListener(this); e3.addActionListener(this); h1.addActionListener(this); h2.addActionListener(this); this.setJMenuBar(bar); bar.add(file); bar.add(edit); bar.add(help); file.add(f1);file.add(f2);file.add(f3); edit.add(e1);edit.add(e2);edit.add(e3); help.add(h1);help.add(h2); text = new JTextField(10); add(text); this.setVisible(true); JButton bt = new JButton("BUTTON"); bt.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent e ) { text.setText("BUTTON "+(i++)); } }); bt.setMnemonic(KeyEvent.VK_O); add(bt,BorderLayout.SOUTH); } public static void main(String[] args) { new Exec66(); } public void actionPerformed(ActionEvent e) { JMenuItem item = (JMenuItem)(e.getSource()); if (item.getActionCommand().equals("退出")) System.exit(1); else text.setText(item.getActionCommand()); } }
![](https://img2024.cnblogs.com/blog/35695/202408/35695-20240826070647288-243310440.jpg)