JBoss Embedded and the JSR-299 Test Harness both have requirements for representing archives, collections of Classes and resources, in an object model. We've taken some ideas initially put forth by Bill and Adrian and reworked them into a standalone project with *no* outside dependencies, called "ShrinkWrap". http://www.jboss.org/community/wiki/ShrinkWrap Example: // Make a name for the JAR String name = "slsb.jar"; // Create and add classes to the JAR JavaArchive archive = JavaArchiveFactory.create(name). addClasses(OutputBean.class, OutputLocalBusiness.class); // Get a stream so we can serialize to disk as a JAR InputStream in = ZipExporter.exportZip(archive); // Or deploy directly to Embedded AS server.deploy(archive); This project in particular has had a lot of community support (I'd estimate 50% of the code and tests currently in place, as well as many design ideas). Aslak Knutsen and John Bailey are the contributors, and can typically be found on IRC Freenode #jboss-dev. S, ALR -- Andrew Lee Rubinger Sr. Software Engineer JBoss by Red Hat http://exitcondition.alrubinger.com