Hi all ! Inside my bean, I use type List<myObject>. Example: public void createMedicalHistory(List<MedicalHistory> info);. After, I declare inside my ejb-jar.xml: <method-param>java.util.List(mypackage.MedicalHistory)</method-param> But, Jboss show: anonymous wrote : java.lang.ClassNotFoundException: No ClassLoaders found for: List(mypackage.MedicalHistory). Please, help me to solve this problem! Thanks. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4072356#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...