Hello, Just wondering why suddenly the use of PrepareStatement in this book, the example before has had us use the EntityManager and the persist method - and now we are back in time. Is there a reason for this, som pedagogy ? Seeing also under the 'Accessing environment properties (injection)' in the same chapter the use of an xml-descriptor. Is there another way to do this, seeing that Glassfish has this approach . %glassfish_home%\bin\asadmin.bat create-jms-resource --host localhost --port 4848 --user admin | --restype javax.jms.Topic --property imqDestinationName=StatusMessageTopic StatusMessageTopic Or is the xml-descriptor to prefer ? Still new here, so I am a bit lost from time to time, but hoping to 'master' this subject at last ( EJB 3.0 that is ). regards, i View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4093969#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...