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.
Not sure. First you need to visit the WL documentation to see if it is approved for usage with Java 5. This would be my preference. Compiling involves rebuilding all of the class files using the Java 1.4 compiler rather than Java 5