Flavia, I still have a problem. Revised code throws the following exception. My class loader loads the test.Test$JoinPoint_print4216308509294254048 class , but javassist cannot see it. I have no idea what's happening. Can you please help me out? | java.lang.RuntimeException: Error generating joinpoint class for joinpoint Method[method=public void test.Test.print()] | at org.jboss.aop.instrument.JoinPointGenerator.doGenerateJoinPointClass(JoinPointGenerator.java:321) | at org.jboss.aop.instrument.JoinPointGenerator.access$100(JoinPointGenerator.java:77) | at org.jboss.aop.instrument.JoinPointGenerator$GenerateJoinPointClassAction$2.generateJoinPointClass(JoinPointGenerator.java:1672) | at ... | | Caused by: javassist.NotFoundException: test.Test$JoinPoint_print4216308509294254048 | at javassist.ClassPool.get(ClassPool.java:436) | at org.jboss.aop.instrument.JoinPointGenerator.generateJoinpointClass(JoinPointGenerator.java:401) | at org.jboss.aop.instrument.JoinPointGenerator.doGenerateJoinPointClass(JoinPointGenerator.java:287) | at ... | View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4150166#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...