I took the SCJP exam yesterday morning with my wife ( https://coderanch.com/t/478959/Sun-Certification-Results/certification/Passed-SCJP-with ).
Scored 90% which I think was pretty good because I didn't practiced that hard. What I did and I really recommend is taking the practice exams in Examlab 1.6 by Devaka Cooray. Really good for learning.
What I really can't forget of myself is that I did a stupid mistake at one question. A variable initialized in a for was used outside it and I didn't see that. Stupid! Stupid! Stupid! But I did 100% at threads!
Can hardly wait to get started on SCJD