I was using the K&B book for my preparation, i skipped the regex chapter (because i think i need a better source if i want to have an in-depth understanding of the chapter) and finish it. I'm taking mock exams and almost got a 70% to 80% on them and i also took the free proficiency exam on SUN website and got a 26/42 (about 60% or 70%).
I also currently doing 2 Java Projects (cause i want to know how far would my knowledge in java).
I do think that I'm ready to take the exam (by the way, I'm going to take 1.6). I was planning to take it late January 2009.
Any advice? Do i need to be a guru to pass the exam?
Jay if you score about 80% on the Master Exam that comes with the K&B book, then you are definitely ready for the exam. Just try Inquisition, ExamLab and if you want you can also go for any paid mock exams. The real exam is going to be really easy if you give more and more mock exams.