Hi Richard, yes, I seem to spent a lot of time to get even trivial stuff working. Looking at X2JB it seems rather simplistic. Does it support collections of abstract types? | List<Animal> getAnimals(); | | <animals> | <cat> | <dog> | <horse> | </animals> | Perhaps you like to explain a little better why I would want to use X2JB and why it is more suitable than JBossXB or JAXB. https://sourceforge.net/forum/forum.php?thread_id=3318335&forum_id=63... View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4240941#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...