我正在尝试清除 JTextArea 中的文本,并查看其他问题,似乎调用 textArea.setText(""/null) 将清除文本区域。我的代码似乎没有发生这种情况,它将新文本附加到该区域中已有的文本中。任何人都可以在我的代码中看到错误吗?
public class morseJFrame extends JFrame implements ActionListener {
private static final long serialVersionUID = 1L;
private JPanel contentPane;
public JTextPane textPane = new JTextPane();
public JTextArea textArea = new JTextArea();
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
morseJFrame frame = new morseJFrame();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the frame.
*/
public morseJFrame() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 450, 508);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(null);
textPane.setBounds(5, 5, 424, 194);
textPane.setText("Enter your alphanumberic text here to translate.");
contentPane.add(textPane);
JButton btnTranslate = new JButton("Translate");
btnTranslate.setBounds(5, 419, 213, 41);
btnTranslate.addActionListener(this);
add(btnTranslate);
contentPane.add(btnTranslate);
textArea.setBounds(5, 210, 424, 203);
contentPane.add(textArea);
JButton btnPlaySound = new JButton("Play Morse Sound");
btnPlaySound.setBounds(228, 419, 201, 41);
contentPane.add(btnPlaySound);
}
public void actionPerformed(ActionEvent e) {
String command = e.getActionCommand();
if (command.equals("Translate")) {
String text = textPane.getText();
String translatedText = MorseTranslate.doMorse(text);
textArea.setText("");
textArea.setText(translatedText);
}
}
}