How do you change border of the pop up section of a JComboBox?

Question

I wan\'t to change the border of the popup/selection part of the JComboBox.

Note that the UI is BasicComboBoxUI

I\'ve tried:

weaponCB.setRend         


        

Answer 1

Something like this works:

Object child = comboBox.getAccessibleContext().getAccessibleChild(0);
BasicComboPopup popup = (BasicComboPopup)child;
JList list = popup.getList();
list.setBorder( whiteBorder );