

package ch12;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
/**
* Created by Jiqing on 2016/12/9.
*/
public class BindKeyTest {
JFrame jf = new JFrame("測試鍵盤綁定");
JTextArea jta = new JTextArea(5,30);
JButton jb = new JButton("發送");
JTextField jtf = new JTextField(15);
public void init() {
jf.add(jta); // 內容區域
JPanel jp = new JPanel();
jp.add(jtf);
jp.add(jb);
jf.add(jp, BorderLayout.SOUTH); // 加入輸入框和按鈕
Action sendMsg = new AbstractAction() {
@Override
public void actionPerformed(ActionEvent e) {
// 事件動作
jta.append(jtf.getText() + "\n");
jtf.setText("");
}
};
// 添加事件監聽器,點擊按鈕發送
jb.addActionListener(sendMsg);
// 關聯Ctrl+Enter和Send
jtf.getInputMap().put(KeyStroke.getKeyStroke('\n',java.awt.event.InputEvent.CTRL_MASK),"send");
jtf.getActionMap().put("send",sendMsg);
jf.pack();
jf.setVisible(true); // 顯示組件
}
public static void main(String[] args) {
new BindKeyTest().init();
}
}