This week's giveaway is in the EJB and other Java EE Technologies forum. We're giving away four copies of EJB 3 in Action and have Debu Panda, Reza Rahman, Ryan Cuprak, and Michael Remijan on-line! See this thread for details.
This may have been a trick question. Your prospective employer may have been trying to find out what depth of trivia you know about the language. All variables declared in an interface are static and final by definition. Given that, can you tell us whether or not you think it is a good practice?