A lot of exame's questions was about Thread and Generics.
My preparation include: Head First Java and SCJP 6.0 books, Author: Kathy Sierra and Bert Bates. After reading those books i took a lot of exam simulator, but ExamLab was the only one that gave me a solid Java knowlegment. I never scored higher than 63%. I would say that if you got around 60% in ExamLab, certainly you will get around 90% in real exam. Amazing tool. Thank you Devaka Cooray
I would like to thank god, for blessing me and JavaRanch, for the forum where i could post doubts and receive answers.