This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
Are you looking for anything in particular? People could probably give you more useful information that way. In any case, I recommend Sun's resources - they have tutorials and the like. And of course the JavaRanch code barn.