As of JDK 7 b37 the EventClient method getEventClientNotificationInfo is documented that way:

    Get the types of notification that an EventClient can send to listeners added with addEventClientListener.

    Returns:
        Types of notification emitted by this EventClient.
    See Also:
        FAILED, NONFATAL, NOTIFS_LOST

When you print the sole entry present in the returned array you read:

javax.management.MBeanNotificationInfo[description=, name=javax.management.Notification, notifTypes=[jmx.event.service.failed, jmx.event.service.notifs.lost]]

1. ==> why only 2 values for notifTypes as apparently 3 are possible ? Is it a documentation issue ? an implementation one ? did I miss something ?
2. ==> why an empty description ? I've the feeling an high level sentence is worth reading.