如何让JTextField响应回车键
问题描述：
所以我希望得到一个JTexField，当按下回车键并将光标放入其中时，将文本放入JTextArea中。任何人都可以帮忙吗？
So I want to get a JTexField to put the text in it into a JTextArea when the enter key is pressed with the cursor in it. Can anyone help?
答
忘记使用 KeyListener 获取 Swing 组件。
此侦听器设计用于 AWT 组件不为 JTextComponents 。
This listener was designed for use with AWT components does not provide a reliable interaction mechanism for JTextComponents.
使用 ActionListener 代替 - 绝大多数系统上 ActionEvent $当按下Enter键时， JTextField 将调度c $ c>。
Use an ActionListener instead - on the vast majority of systems an ActionEvent is dispatched by the JTextField when enter is pressed.
myTextField.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
myTextArea.append(myTextField.getText() + "\n");
}
});