[jboss-user] start up mbean for jboss

Hi all, I want to add a startup class which should be loaded when the jboss starts up. I did some research Which says create mbean and add it jboss-service.xml file( not sure which location). I am using ear deployment. The class which I want o make the start up class resides in ear file under /lib directory. I am using jboss-4.2.1.GA. I tried to put the MBean as service in jboss-4.2.0.GA\server\servicelink\conf\ jboss-service.xml but got no class java.lang.ClassNotFoundException: No ClassLoaders found for JbossStartUp Below is the code for MBean. import org.jboss.system.ServiceMBean; public interface JbossStartUpMBean extends ServiceMBean { public void init(); public void start() throws Exception; public void stop(); public void create(); public void destroy(); public void jbossInternalLifecycle(java.lang.String s) throws java.lang.Exception; } 2.The implemenatation class: public class JbossStartUp implements MBeanRegistration, JbossStartUpMBean { private static Log logger = LogFactory.getLog(JbossStartUp.class); public JbossStartUp() { } public ObjectName preRegister(MBeanServer server, ObjectName name) throws Exception { return new ObjectName(":service=JbossStartUp"); } public void postRegister(Boolean boolean1) { } public void preDeregister() throws Exception { } public void postDeregister() { } public void create() { } public void start() throws Exception { startup(); } public String startup() throws Exception { testStartUp startup = new testStartUp(); startup.startup(); return "OK"; } public void init() { } public void stop() { } public void destroy() { } public String getName() { return null; } public int getState() { return 0; } public String getStateString() { return null; } Regards shiva