public  void postDeregister()
Allows the MBean to perform any operations needed after having been
unregistered in the MBean server.
If the implementation of this method throws a RuntimeException 
or an Error , the MBean Server will rethrow those inside
a RuntimeMBeanException  or RuntimeErrorException ,
respectively. However, throwing an exception in {@code postDeregister}
will not change the state of the MBean:
the MBean was already successfully deregistered and will remain so. 
This might be confusing for the code calling
{@code unregisterMBean()}, as it might assume that MBean deregistration
has failed. Therefore it is recommended that implementations of
{@code postDeregister} do not throw Runtime Exceptions or Errors if it
can be avoided.

 public  void postRegister(Boolean registrationDone)
Allows the MBean to perform any operations needed after having been
registered in the MBean server or after the registration has failed.
If the implementation of this method throws a RuntimeException 
or an Error , the MBean Server will rethrow those inside
a RuntimeMBeanException  or RuntimeErrorException ,
respectively. However, throwing an exception in {@code postRegister}
will not change the state of the MBean:
if the MBean was already registered ({@code registrationDone} is
{@code true}), the MBean will remain registered. 
This might be confusing for the code calling {@code createMBean()}
or {@code registerMBean()}, as such code might assume that MBean
registration has failed when such an exception is raised.
Therefore it is recommended that implementations of
{@code postRegister} do not throw Runtime Exceptions or Errors if it
can be avoided.

 public  void preDeregister() throws Exception
Allows the MBean to perform any operations it needs before
being unregistered by the MBean server.

 public ObjectName preRegister(MBeanServer server,
    ObjectName name) throws Exception
Allows the MBean to perform any operations it needs before
being registered in the MBean Server.  If the name of the MBean
is not specified, the MBean can provide a name for its
registration.  If any exception is raised, the MBean will not be
registered in the MBean Server.