Hi All,
I'm facing a unique problem, Basically i'm trying to send & recieve notifications from and within multiple MBean's.
For this, i tried a lot and even follow the steps specified on wiki ( http://www.jboss.org/community/docs/DOC-9713) . but failed to listen anything.
I'm using JDK 1.6.0_03 and JBoss 4.2.3. The code is

package com.aa.trial.mbean;


import java.util.Date;

import javax.management.Notification;
import javax.management.NotificationListener;
import javax.management.ObjectName;

import org.apache.log4j.Logger;
import org.jboss.annotation.ejb.Management;
import org.jboss.annotation.ejb.Service;
import org.jboss.monitor.services.NotificationListenerMBean;
import org.jboss.system.ListenerServiceMBeanSupport;
import org.jboss.system.ServiceMBeanSupport;
import org.jboss.varia.scheduler.Schedulable;


/**
 * TODO: Documentation to be done for type 'Trial'..
 *
 * @author maym
 */
@Service(objectName = "com.aa.trial.mbean:service=TrialMBeanService")
@Management(TrialMBean.class)
public class TrialMBeanService
 extends ListenerServiceMBeanSupport
 implements TrialMBean, NotificationListenerMBean
{


 private static Logger aLogger = null;
 private ObjectName anObjectName = null;

 static
 {
 aLogger = Logger.getLogger(TrialMBeanService.class);
 }


 /**
 * TODO: Documentation to be done for constructor 'TrialMBeanService', by 'maym'..
 */
 public TrialMBeanService()
 {

 }


 /**
 * @see com.aa.trial.mbean.TrialMBean#test()
 */
 @Override
 public void test ()
 {
 System.out.println("Hello !!!!!!!!!!!!!!!!!!!!!!! ");

 }


 /**
 * @see org.jboss.system.ServiceMBeanSupport#startService()
 */
 @Override
 protected void startService ()
 throws Exception
 {
 // TODO Auto-generated method stub
 super.subscribe(true);
 }


 /**
 * @see org.jboss.system.ListenerServiceMBeanSupport#handleNotification2(javax.management.Notification, java.lang.Object)
 */
 @Override
 public void handleNotification2 (Notification anNotification, Object anHandback)
 {
 // TODO Auto-generated method stub
 log.debug("Notification Recieved!!!");
 test();
 }


 /**
 * @see org.jboss.system.ServiceMBeanSupport#stopService()
 */
 @Override
 protected void stopService ()
 throws Exception
 {
 // TODO Auto-generated method stub
 super.unsubscribe();
 }


 /**
 * @see org.jboss.monitor.services.NotificationListenerMBean#getDynamicSubscriptions()
 */
 @Override
 public boolean getDynamicSubscriptions ()
 {
 // TODO Auto-generated method stub
 return true;
 }


 /**
 * @see org.jboss.monitor.services.NotificationListenerMBean#getLogLevel()
 */
 @Override
 public String getLogLevel ()
 {
 // TODO Auto-generated method stub
 return "DEBUG";
 }


 /**
 * @see org.jboss.monitor.services.NotificationListenerMBean#getNotificationCount()
 */
 @Override
 public long getNotificationCount ()
 {
 // TODO Auto-generated method stub
 return super.getNextNotificationSequenceNumber() - 1;

 }


 /**
 * @see org.jboss.monitor.services.NotificationListenerMBean#getNotificationListener()
 */
 @Override
 public ObjectName getNotificationListener ()
 {
 return anObjectName;
 }


 /**
 * @see org.jboss.monitor.services.NotificationListenerMBean#setDynamicSubscriptions(boolean)
 */
 @Override
 public void setDynamicSubscriptions (boolean anArg0)
 {


 }


 /**
 * @see org.jboss.monitor.services.NotificationListenerMBean#setLogLevel(java.lang.String)
 */
 @Override
 public void setLogLevel (String anArg0)
 {
 // TODO Auto-generated method stub

 }

 /**
 * @see org.jboss.monitor.services.NotificationListenerMBean#setNotificationListener(javax.management.ObjectName)
 */
 @Override
 public void setNotificationListener (ObjectName anArg0)
 {
 try
 {
 this.anObjectName = anArg0;
 getServer().addNotificationListener(anArg0, this, null, null);
 }
 catch (Exception exception)
 {
 exception.printStackTrace();
 }
 }
}

package com.aa.trial.mbean;

import org.jboss.annotation.ejb.Management;
import org.jboss.system.ListenerServiceMBean;
import org.jboss.system.ServiceMBean;


/**
 * Trial MBean
 *
 * @author maym
 */
@Management
public interface TrialMBean
 extends ListenerServiceMBean
{
 /**
 *
 * TODO: Documentation to be done for method 'test', by 'maym'..
 *
 */
 public void test ();
}

<?xml version="1.0" encoding="UTF-8"?>
<server>
 <mbean code="com.aa.trial.mbean.TrialMBeanService" name="com.aa.trial.mbean:service=TrialMBeanService">
 <attribute name="SubscriptionList">
 <subscription-list>
 <mbean name="*:service=invoker,*" handback="anObject"></mbean>
 <mbean name="jboss.monitor:*">
 <notification type="JBOSS_MONITOR_NOTIFICATION"></notification>
 </mbean>
 <mbean name="JMImplementation:type=MBeanServerDelegate">
 <notification type="JMX.mbean.registered"></notification>
 </mbean>
 </subscription-list>
 </attribute>
 </mbean>
 </server>