This week's book giveaway is in the OCPJP forum. We're giving away four copies of OCA/OCP Java SE 7 Programmer I & II Study Guide and have Kathy Sierra & Bert Bates on-line! See this thread for details.
A renderer isn't an editor, and JList doesn't support editing. If that doesn't make much sense to you, read the API for JTable and follow the link to the tutorial on How to Use Tables, where you will find a section titled Renderers and Editors: concepts.
There are no new questions, but there may be new answers.