public class MBeanServerNotification extends Notification
 To receive MBeanServerNotifications, you need to register a listener with
 the MBeanServerDelegate MBean
 that represents the MBeanServer. The ObjectName of the MBeanServerDelegate is
 MBeanServerDelegate.DELEGATE_NAME, which is
 JMImplementation:type=MBeanServerDelegate.
 
The following code prints a message every time an MBean is registered
 or unregistered in the MBean Server mbeanServer:
 private static final NotificationListener printListener = new NotificationListener() {
     public void handleNotification(Notification n, Object handback) {
         if (!(n instanceof MBeanServerNotification)) {
             System.out.println("Ignored notification of class " + n.getClass().getName());
             return;
         }
         MBeanServerNotification mbsn = (MBeanServerNotification) n;
         String what;
         if (n.getType().equals(MBeanServerNotification.REGISTRATION_NOTIFICATION))
             what = "MBean registered";
         else if (n.getType().equals(MBeanServerNotification.UNREGISTRATION_NOTIFICATION))
             what = "MBean unregistered";
         else
             what = "Unknown type " + n.getType();
         System.out.println("Received MBean Server notification: " + what + ": " +
                 mbsn.getMBeanName());
     }
 };
 ...
     mbeanServer.addNotificationListener(
             MBeanServerDelegate.DELEGATE_NAME, printListener, null, null);
 
 
 An MBean which is not an MBeanServerDelegate may also emit
 MBeanServerNotifications. In particular, there is a convention for
 MBeans to emit an MBeanServerNotification for a group of MBeans.
An MBeanServerNotification emitted to denote the registration or unregistration of a group of MBeans has the following characteristics:
"JMX.mbean.registered.group" or
     "JMX.mbean.unregistered.group", which can also be written REGISTRATION_NOTIFICATION+ ".group" or
     UNREGISTRATION_NOTIFICATION+ ".group".
 
 MBeans which emit these group registration/unregistration notifications will
 declare them in their MBeanNotificationInfo.
 
| Modifier and Type | Field and Description | 
|---|---|
| static String | REGISTRATION_NOTIFICATIONNotification type denoting that an MBean has been registered. | 
| static String | UNREGISTRATION_NOTIFICATIONNotification type denoting that an MBean has been unregistered. | 
source| Constructor and Description | 
|---|
| MBeanServerNotification(String type,
                       Object source,
                       long sequenceNumber,
                       ObjectName objectName)Creates an MBeanServerNotification object specifying object names of
 the MBeans that caused the notification and the specified notification
 type. | 
| Modifier and Type | Method and Description | 
|---|---|
| ObjectName | getMBeanName()Returns the  object name of the MBean that caused the notification. | 
| String | toString()Returns a String representation of this notification. | 
getMessage, getSequenceNumber, getTimeStamp, getType, getUserData, setSequenceNumber, setSource, setTimeStamp, setUserDatagetSourcepublic static final String REGISTRATION_NOTIFICATION
public static final String UNREGISTRATION_NOTIFICATION
public MBeanServerNotification(String type, Object source, long sequenceNumber, ObjectName objectName)
type - A string denoting the type of the
 notification. Set it to one these values: REGISTRATION_NOTIFICATION, UNREGISTRATION_NOTIFICATION.source - The MBeanServerNotification object responsible
 for forwarding MBean server notification.sequenceNumber - A sequence number that can be used to order
 received notifications.objectName - The object name of the MBean that caused the
 notification.public ObjectName getMBeanName()
public String toString()
NotificationtoString in class Notification Submit a bug or feature 
For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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