Simple way to cancel user input on esc key pressed?

问题

Is there a simple way to cancel the user input in a JTextField when key Esc is pressed ?

I mean something different that a key listener and a data backup.

Thanks

回答1:

Add a KeyListener to your JTextField:

JTextField field = new JTextField.addKeyListener(yourKeyListener);

where yourKeyListener could be:

public class YourKeyListener implements KeyListener{
    void keyPressed(KeyEvent e){
         Component source = e.getSource();
         if (source instanceof JTextField && e.getId() == KeyEvent.VK_ESCAPE ){

             JTextField f = (JTextField) source;
             f.setText("");

         }
    }
} 

回答2:

CancelAction, discussed here and shown here, is an example that uses Action and a key binding.

来源：https://stackoverflow.com/questions/7173674/simple-way-to-cancel-user-input-on-esc-key-pressed