This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
I've read that Valentine's mock exam is more difficult than the Sun exam. So for many questions like that one -- its not likely you'll get a question like that -- but no guarantees -- its defintley fair game.