This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
Check out JTable.setSelectionModel in combination with the ListSelectionModel interface. With the addSelectionInterval and insertSelectionInterval methods you determine what rows / columns are actually selected.
Perhaps the easiest way is to wrap the default selection model: