求助基础问题，急！

Question

我在试着写一个聊天程序，在JTextArea上输入信息之后，按ctrl+enter组合键就调用别的方法发送出信息；我如何监听组合键被按下？JTextArea上又不能用ActionListener.
是应该用KeyListener吗？我试了半天没搞出来，请高手给出代码。

Answer 1

这段代码能够实现public class Test {
    private boolean isPressed = false;
    public void show(){
        JFrame frame = new JFrame();        MyTableModel tableModel=new MyTableModel();
        JTable table=new JTable(tableModel);
        JTextArea text = new JTextArea(3,20);
        text.addKeyListener(new KeyAdapter(){
            public void keyPressed(KeyEvent e) {
                if(KeyEvent.VK_CONTROL == e.getKeyCode()){
                    isPressed = true;
                }
                if(e.getKeyCode() == KeyEvent.VK_ENTER && isPressed){
                     JOptionPane.showMessageDialog(null,"Ctrl+Enter was pressed.");
                }
            }
            public void keyReleased(KeyEvent e){
                System.out.println(e.getKeyCode());
                if(KeyEvent.VK_CONTROL == e.getKeyCode() || KeyEvent.VK_ENTER == e.getKeyCode()){
                    isPressed = false;
                }
            }
        });
        frame.getContentPane().add(new JScrollPane(text));
        frame.setSize(300,400);
        frame.show();
    }
    public static void main(String[] args){
        Test test = new Test();
        test.show();
    }
}