Hi folks, i am writing a simple jboss / ear application to get myself used to dealing with Jboss and EJB. I googled a lot, but i couldn't find an answer to the problem i have right now: My project has the common EAR-layout: - common - ejb - webapp - build.xml Now my EJB-layer uses one ActiveMQ jar file. Now i don't know where to put this jar within my EAR-file? First - in lack of better knowledge and for testing purposes - i put the jar-file just in the root of my EAR-file. This is simply ignored by Jboss: java.lang.NoClassDefFoundError: org/apache/activemq/ActiveMQConnectionFactory But this class is deinitely in the ActiveMQ-jar which resides on the root-level of my EAR: jar tf activemq-core-5.0-SNAPSHOT.jar | grep -i ActiveMQConnectionFactory | org/apache/activemq/ActiveMQConnectionFactory$1.class | org/apache/activemq/ActiveMQConnectionFactory.class | org/apache/activemq/spring/ActiveMQConnectionFactory.class So, finally my question......:-) Where to put application- AND layer-specific jar-files within an EAR? More specific: Where to put the ActiveMQ jar-file within my EAR and how do i get Jboss to put it in the classpath? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4136903#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...