This week's book giveaway is in the OCMJEA forum. We're giving away four copies of OCM Java EE 6 Enterprise Architect Exam Guide and have Paul Allen & Joseph Bambara on-line! See this thread for details.
It's for places where Eclipse internally invokes "javac", not "java". You'd set Eclipse's own VM args on the eclipse command line, and for debugging, uou can set up whatever options you want on the debug profile you create.