Have just passed the SCJP2 2 hours ago. A bit nervous but managed to score 89%. Sure feel good.
A bit of my experience: I read Mughal's A Programmer Guide to
Java Certification, take a lot of mock exams (Mughal's, Valetin's, Marcus's and Sun's) and coding a lot, too. And of course, visit javaranch forum vary often
[In no particular order!]
Thanks all for your help, especially Valetin.