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 used them. Well worth the purchase but the software can be slightly buggy. There are also some interfaces and API methods thrown into the questions that you will NOT find on the real SCJP exam. Best regards and good luck with the study!