swing 003（关联键值）

import java.awt.*;
import java.awt.event.*;

import javax.swing.*;
/**
* Description:
* <br/>Copyright (C), 2005-2008, Yeeku.H.Lee
* <br/>This program is protected by copyright laws.
* <br/>Program Name:
* <br/>Date:
* @author  Yeeku.H.Lee [e-mail]
* @version  1.0
*/
public class TestBindKey
{
JFrame jf = new JFrame("测试键盘绑定");
JTextArea jta = new JTextArea(5, 30);
JButton jb = new JButton("发送");
JTextField jtf = new JTextField(15);
public void init()
{
jf.add(jta);
JPanel jp = new JPanel();
jp.add(jtf);
jp.add(jb);
jf.add(jp , BorderLayout.SOUTH);
//发送消息Action,Action是ActionListener的子接口
Action sendMsg = new AbstractAction()
{
public void actionPerformed(ActionEvent e)
{
jta.append(jtf.getText() + "\n");
jtf.setText("");
}
};
//添加事件监听器
jb.addActionListener(sendMsg);
//将Ctrl+Enter键和"send"关联
jtf.getInputMap().put(KeyStroke.getKeyStroke('\n', java.awt.event.InputEvent.CTRL_MASK)
, "send");
//将"send"和sendMsg Action关联
jtf.getActionMap().put("send", sendMsg);
jf.pack();
jf.setVisible(true);
}
public static void main(String[] args)
{
new TestBindKey().init();
}
}