I agree that classes should not get generated in another qualified package, so my test GeneratedClassesUnitTestCase. testImportAllGenerateClassInNewPackage() can be scrapped. AFAICT this will never happen in AOP, so it can go. However, GeneratedClassesUnitTestCase.testImportAllGenerateClassInDefaultPackage() should remain. Say you are generating an AOP proxy for java.util.ArrayList() for a deployment. We cannot generate new classes in the java.util. package, so they are generated in the default package. The classloader used to create the proxy is the classloader of the deployment, since classes loaded by the bootstrap cannot see the ones from the aop (needed to access things like the Advisor, and the default interfaces the proxy gets such as AspectManaged) and deployment layers (in case of deployment specific inteface introductions). https://jira.jboss.org/jira/browse/JBAS-5505 View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4204731#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...