How to make the update immediately when the jSpinner value was changed.
ChangeListener listener = new ChangeListener() {
public void stateChanged(ChangeEvent e) {
jLabel.setText(e.getSource());
}
};
spinner1.addChangeListener(listener);
The code above doesnt change the label text automatically, it required you to click again anyplace to update.
The answer is to configure the formatter used in the JFormattedTextField which is a child of the spinner's editor:
formatter.setCommitsOnValidEdit(true);
Unfortunately, getting one's hand on it is as long and dirty as the introductory sentence:
final JSpinner spinner = new JSpinner();
JComponent comp = spinner.getEditor();
JFormattedTextField field = (JFormattedTextField) comp.getComponent(0);
DefaultFormatter formatter = (DefaultFormatter) field.getFormatter();
formatter.setCommitsOnValidEdit(true);
spinner.addChangeListener(new ChangeListener() {
@Override
public void stateChanged(ChangeEvent e) {
LOG.info("value changed: " + spinner.getValue());
}
});
A slightly (but not by much) cleaner way might be to subclass NumberEditor and expose a method which allows the config