I've just passed the SCJA exam. I got 82%. I had only a few days to prepare for it. During my preparation I used SCJA Certification guide written by Cameron. I've done a couple of mocks from Cameron Mock Exam Questions book.
All I wanted to say is many thanks for your books, and wish you all the best and hope you will keep going up.
For people who are interested in SCJA I strongly recommended reading Cameron's books