Please revise your display name to meet the JavaRanch Naming Policy. To maintain the friendly atmosphere here at the ranch, we like folks to use real (or at least real-looking) names, with a first and a last name.
Katherine Sierra and Kahlid mughal are the two best books ppl read for clearing SCJP. Katherine book is more popular. Giving mock exams before giving exam is equally important. Please go to FAQ section under SCJP.