Don't think I've posted a message in this forum before but I've been lurking here for a month or two now. Took the SCJD and SCJWCD exams yesterday. Passed SCJCD with ~77%. My exam preperation was probably slightly different to most other people on here. I got the HFSJ book and found it really useful but started to run out of time before the exam and only read about 1/3 of it. I then started taking practice test after practice test and for each question I got wrong I'd research the answer in HFSJ and just learn the sections I was weak on.
I found http://www.jdiscuss.com and http://www.j2eecertificate.com really useful for the practice tests. The actual exam I sat caught we offguard with a few of the questions that I wasn't really expecting, I seemed to have loads about HTTP methods other than GET and POST that really didn't seem relevent to the exam. I also had a few tricky questions regarding EL. The design pattern questions were great and are an easy way to pick up marks as they only take a few seconds to read and choose the correct answer.