javax.jms.MessageFormatException when ObjectMessage.getObject()

[Tomáš Koutný]

Hi, I'm sending message via topic:       ObjectMessage message = session.createObjectMessage(new Event());       session.createPublisher(topic).publish(message, deliveryMode, priority, expiration); When I catch the message in my MDB, I get exception in getObject():       public void onMessage(Message msg) { 1.            Thread.currentThread().getContextClassLoader().loadClass("com.cleverlance.cmds.comm.Event"); 2.            ((ObjectMessage)msg).getObject(); Class Event is in classpath and is visible for classloader (line 1 is ok). When running line 2, I get javax.jms.MessageFormatException: com.cleverlance.cmds.comm.Event   Class Event is very simple:       package com.cleverlance.cmds.comm;       public class Event implements java.io.Serializable {             public Event();       }   Do you know what's wrong? Thanks.