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.
SAR files are Service ARchives. Like their abbreviated form, the simple *-service.xml file, they represent services that are to be loaded into the JBoss microkernel. These archives/files are specific to JBoss, but the services they represent are not necessarily so.