Pressing Enter on JTable, Not jumping to Next Row

I have a JTable that a user can select only one row and non of the fields are editbale, it is to display data only. I have the enter key captured when user presses a key, and I display a dialog when enter is pressed. Everything works great, but how do I stop the default behavior of the return key not causing the jTable to go to the next line? Any ideas? Thanks, Jeff