Hello, I am new to Javassist, so excuse me for all the things I do not know yet. I am having trouble adding a class annotation. I do exactly what the AnnotationsAttribute API page sample does: ClassFile cf = ... ; ConstPool cp = cf.getConstPool(); AnnotationsAttribute attr = new AnnotationsAttribute(cp, AnnotationsAttribute.visibleTag); Annotation a = new Annotation("Author", cp); a.addMemberValue("name", new StringMemberValue("Chiba", cp)); attr.setAnnotation(a); cf.addAttribute(attr); cf.setVersionToJava5(); But when I create this page, using ct.write(), I just get a class which extends an Object with an empty constructor, but no annotation. Any insight? Thank you. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4170227#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...