Aparna Rallabandi [http://community.jboss.org/people/aparnaralla] created the discussion "JMS createConnection on ConnectionFactory failed for NPE" To view the discussion, visit: http://community.jboss.org/message/628848#628848 -------------------------------------------------------------- I have a JMS producer on Jboss 6.0.0.M2. Used the Producer from the example below in my application running on Jboss. I use the docs\examples\jms\examples\queue\...\QueueExample.java and modified it to be a MessageListener (Modified file is attached) and that works with my JMS producer. Now we have a standalone J2SE Swing application which need to be the listener and show popups for each event it receives. When this standalone app tries to create a connection it fails at createConnection with the following StackTrace. Any pointers or direction you could give will be very helpful. Regards, Aparna INFO  line:54 file:JmsConsumer.java method:setup() "Queue /queue/testQueue exists" DEBUG line:615 file:Client.java method:connect() "Client[19176986:3j001-srvfa8-gt1udu6a-1-gt1uduu1-4].connect(null)" TRACE line:616 file:Client.java method:connect() "Client[19176986:3j001-srvfa8-gt1udu6a-1-gt1uduu1-4]: metadata = null" TRACE line:320 file:PropertyEditors.java method:mapJavaBeanProperties() "Mapping properties for bean: SocketClientInvoker[ee558f, bisocket://localhost.localdomain:4457]" TRACE line:365 file:PropertyEditors.java method:mapJavaBeanProperties() "Property editor found for: marshaller, editor: java.beans.PropertyDescriptor@17ff5aaf, setter: public void org.jboss.remoting.MicroRemoteClientInvoker.setMarshaller(org.jboss.remoting.marshal.Marshaller)" TRACE line:373 file:PropertyEditors.java method:mapJavaBeanProperties() "Failed to find property editor for: marshaller" TRACE line:384 file:PropertyEditors.java method:mapJavaBeanProperties() "Failed to write property" java.lang.NullPointerException     at org.jboss.util.propertyeditor.PropertyEditors.mapJavaBeanProperties(PropertyEditors.java:377)     at org.jboss.remoting.transport.socket.MicroSocketClientInvoker.mapJavaBeanProperties(MicroSocketClientInvoker.java:1359)      at org.jboss.remoting.transport.socket.MicroSocketClientInvoker.setup(MicroSocketClientInvoker.java:533)     at org.jboss.remoting.transport.socket.MicroSocketClientInvoker.<init>(MicroSocketClientInvoker.java:292)      at org.jboss.remoting.transport.socket.SocketClientInvoker.<init>(SocketClientInvoker.java:78)     at org.jboss.remoting.transport.bisocket.BisocketClientInvoker.<init>(BisocketClientInvoker.java:166)      at org.jboss.remoting.transport.bisocket.TransportClientFactory.createClientInvoker(TransportClientFactory.java:44)     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)     at java.lang.reflect.Method.invoke(Method.java:597)     at org.jboss.remoting.InvokerRegistry.loadClientInvoker(InvokerRegistry.java:453)      at org.jboss.remoting.InvokerRegistry.createClientInvoker(InvokerRegistry.java:352)     at org.jboss.remoting.Client.connect(Client.java:632)     at org.jboss.remoting.Client.connect(Client.java:582)     at org.jboss.jms.client.delegate.ClientConnectionFactoryDelegate.createClient(ClientConnectionFactoryDelegate.java:333)      at http://org.jboss.jms.client.delegate.clientconnectionfactorydelegate.org/ org.jboss.jms.client.delegate.ClientConnectionFactoryDelegate.org$jboss$jms$client$delegate$ClientConnectionFactoryDelegate$getClientAOPStack$aop(ClientConnectionFactoryDelegate.java:243)      at org.jboss.jms.client.delegate.ClientConnectionFactoryDelegate.getClientAOPStack(ClientConnectionFactoryDelegate.java)     at org.jboss.jms.client.ClientAOPStackLoader.load(ClientAOPStackLoader.java:75)     at org.jboss.jms.client.JBossConnectionFactory.createConnectionInternal(JBossConnectionFactory.java:192)      at org.jboss.jms.client.JBossConnectionFactory.createConnection(JBossConnectionFactory.java:87)     at org.jboss.jms.client.JBossConnectionFactory.createConnection(JBossConnectionFactory.java:82)     at rt.controller.JmsConsumer.setup(JmsConsumer.java:56)      at rt.controller.JmsConsumer.<init>(JmsConsumer.java:44) -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/628848#628848] Start a new discussion in JBoss Messaging at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]