It is a surprise. I expected a 80%. So I think the real exam is easier than the Mock ones.
Really need to thank Javaranch where I got the mock exams list and many great tips(Anupam Sinha, Kim Hackett, ...). Javaranch is great!
I used:
1. A Programmer's Guide to
Java Certification
by Khalid Azim Mughal, Rolf Rasmussen
2. Marcus Green's mock exam.
3. Dan Chisholm's Mock Exam.
4. Khalid's mock exam.
Thank you all!
SCJP, SCJD, SCWCD, SCEA I.