You ask lots of questions but never bother to read the answers. At least you never bother to reply stating whether the suggestions work or not. So I won't bother to answer the question so you don't have to worry about replying.
I take it you are aware of MVC.
The model holds the data. It is not aware of any visual aspects of displaying that data. In fact the model even does not care how it's data is rendered. Check out the standard tutorial (The API docs have a link to it) on how to use JTables. Scroll down to the section which talks about renderers and editors.