How to check manual edits on a JSpinner field using DefaultEditor approach

Question

I am adapting code from here:

Value Change Listener to JTextField

EDIT 2

The following code gives me an infinite loop of dialogs when I press the up spin

Answer 1

This proved to be a huge pain the rear. I wanted to color my text field background immediately. Ended up making an editor that overrode the editor I wanted to use, then setting it as the spinners editor accordingly. Seems to be working for me so far.

Add a java class with the following (remove the quotes around the code block, I'm having a hard time with stack overflow's editor):

`public class CustomNumberEditor extends JSpinner.NumberEditor {
    public CustomNumberEditor( JSpinner spinner ) {
        super( spinner );
        ((DefaultFormatter ) ((JFormattedTextField) getComponent( 0 )).getFormatter()).setCommitsOnValidEdit( true );
    }
    @Override public void propertyChange(PropertyChangeEvent e) {
        super.propertyChange( e );
        if( e.getPropertyName().equals( "value" ) )
            doStuff( (int) e.getNewValue() );
    }
    private void doStuff( int value )
    {
        //do stuff
    }
}`

Then when adding your spinner, do this:

_quantitySpinner.setEditor(new CustomNumberEditor(_quantitySpinner));