I skipped to say that I also implemented in both mixin files the method defined in the interface IEjemploIntro.java. Following I show how I did it (just for completeness): public void metodoNuevoUno(java.lang.String parametro) | { | String a = "metodonuevoUno con el param: " + parametro; | System.out.println("-----ADENTRO-----> " + a); | } In my example it never gets used anyway. Ely View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4111457#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...