I got NullPointerException when run all examples together. The problem lies between line 146 -- line 151: for (int i = 0; i < numMessages; i += 2) { message0 = (TextMessage)consumer0.receive(5000); //--> possible got null message due to time delay over 5 sec. System.out.println("Got message: " + message0.getText() + " from node 0"); //--> NPE } So I will change the receive(5000) to receive(). View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4226450#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...