Im a programmer and knows about java 1.3, but i have to have a brush up about whats new in java 1.5, do anyone knows a good book that describes the diffrence ???
A good starting point would be the SDK docs, which include a fairly extensive list of changes between releases. The differences between 1.3 and 1.4 are listed here, and the differences between 1.4 and 5.0 here.