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.