Q:

Remove cell editor border in JTable (Windows LaF)

I have a JTextField based cell editor that comes with this ugly black border (ignore the caret on the left):

Is there a way to remove it so it looks similar to this?

A:

After creating the table you can try something like:
DefaultCellEditor editor = (DefaultCellEditor)table.getDefaultEditor(Object.class);
JTextField textField = (JTextField)editor.getComponent();
textField.setBorder( null );

Edit:
The above approach won't work because the JTable uses a GenericEditor which is an inner class of the table that extend the DefaultCellEditor and adds extra functionality for the table. 
One piece of functionality added is to manager the Border: "red" for errors and "black" for valid data. So the border is continually being reset by the editor.
Or the other approach would be something like:
JTextField textField = new JTextField();
textField.setBorder( null );
DefaultCellEditor editor = new DefaultCellEditor( textField );
table.setDefaultEditor(Object.class, editor):

