This week's book giveaway is in the OCPJP forum. We're giving away four copies of OCA/OCP Java SE 7 Programmer I & II Study Guide and have Kathy Sierra & Bert Bates on-line! See this thread for details.
I have passed the SCJD with score 347. It is not high,but I am very happy. My score is : General Considerations (maximum = 100): 96 Documentation (maximum = 70): 69 O-O Design (maximum = 30): 26 GUI (maximum = 40): 32 Locking (maximum = 80): 44 Data store (maximum = 40): 40 Network server (maximum = 40): 40 My locking mechanism may be bot very good. I implemented the locking in the data class, with a static HashMap.