Java KeyListener not firing on JSpinner

have tried a few different approaches to this but with no success so far. Just wondered if I'm missing anything. I have a JSpinner which is a component of a DateSelector widget alongside a Calendar. I am trying to fire a validation method if the user changes any text in the JSpinner instead of using the Calendar control or the JSpinner up and down arrows.

Here are the different approaches I have tried:

jSpinner1.addKeyListener(kl);

jSpinner1.getEditor().addKeyListener(kl);

((JSpinner.DefaultEditor) jSpinner1.getEditor().getTextField().addKeyListener(kl);

Anyone out there got any ideas as to what I'm doing wrong? Thanks

UPDATE Apologies, I should have said that I have already added a ChangeListener to the JSpinnerDateModel which is attached to the JSpinner. Like so:

ChangeListener changeListener = new ChangeListener() {
        @Override
        public void stateChanged(ChangeEvent e) {
            dateChanged();
        }
    };

    jSpinnerDateModel.addChangeListener(ch开发者_如何学GoangeListener);

    KeyListener keyListener = new KeyListener() {

        @Override
        public void keyTyped(KeyEvent e) {
            // TODO Auto-generated method stub

        }

        @Override
        public void keyPressed(KeyEvent e) {
            System.out.println(e.getKeyChar());
            dateChanged();
        }

        @Override
        public void keyReleased(KeyEvent e) {
            // TODO Auto-generated method stub

        }

    };
    ((JSpinner.DefaultEditor) jSpinner1.getEditor()).getTextField().addKeyListener(
            keyListener);

Thanks

Frank

If you want to disable keyboard editing do this:

JFormattedTextField tf = ((JSpinner.DefaultEditor)spinner.getEditor()).getTextField();
tf.setEditable(false);

To listen for key events you need to add a listener to the text field. This works for me:

((JSpinner.DefaultEditor)spinner.getEditor()).getTextField().addKeyListener(new KeyListener(){

            @Override
            public void keyPressed(KeyEvent e) {                    
            }

            @Override
            public void keyReleased(KeyEvent e) {
                System.out.println("PRESSED!");                    
            }

            @Override
            public void keyTyped(KeyEvent e) {                    
            }

        });

JSpinners handle KeyEvents themselves, but they fire ChangeEvents to the outside world. Adding a ChangeListener should allow you to perform the validation you wish.

See also: Detecting Spinner Value Changes (Java Tutorials)

This is a shortfall of swing, and in my opinion JSpinner should follow JComboBox in supplying the following access to the underlying text field:

JComboBox.getEditor().getEditorComponent()

From going through the source of J1.7 I found you can acheive pretty much the same thing with

JSpinner.getEditor().getComponent(0)

Therefore you can "hack" the listener in the following way:

JSpinner.getEditor().getComponent(0).addKeyListener(...)

Obviously this depends on the 'under the covers' implementation of swing and works as at J1.7 but there is no guarantee this works for other versions future or past.

Enjoy.

EDIT

or if the editor is an instance of DefaultEditor, you can cast it as such and use 'getTextField()'. It would be handy if this were defined in the interface.