类层次结构
- java.lang.Object 
       
- java.rmi.activation.ActivationDesc (implements java.io.Serializable)
 - java.rmi.activation.ActivationGroupDesc (implements java.io.Serializable)
 - java.rmi.activation.ActivationGroupDesc.CommandEnvironment (implements java.io.Serializable)
 - java.rmi.activation.ActivationGroupID (implements java.io.Serializable)
 - java.rmi.activation.ActivationID (implements java.io.Serializable)
 - java.rmi.server.RemoteObject (implements java.rmi.Remote, java.io.Serializable) 
         
- java.rmi.server.RemoteServer 
           
- java.rmi.activation.Activatable
 - java.rmi.server.UnicastRemoteObject 
             
- java.rmi.activation.ActivationGroup (implements java.rmi.activation.ActivationInstantiator)
 
 
 - java.rmi.server.RemoteStub 
           
- java.rmi.activation.ActivationGroup_Stub (implements java.rmi.activation.ActivationInstantiator, java.rmi.Remote)
 
 
 - java.rmi.server.RemoteServer 
           
 - java.lang.Throwable (implements java.io.Serializable) 
         
- java.lang.异常 
           
- java.rmi.activation.ActivationException 
             
- java.rmi.activation.UnknownGroupException
 - java.rmi.activation.UnknownObjectException
 
 - java.io.IOException 
             
- java.rmi.RemoteException 
               
- java.rmi.activation.ActivateFailedException
 
 
 - java.rmi.RemoteException 
               
 
 - java.rmi.activation.ActivationException 
             
 
 - java.lang.异常 
           
 
 
Interface Hierarchy
- java.rmi.Remote 
       
- java.rmi.activation.ActivationInstantiator
 - java.rmi.activation.ActivationMonitor
 - java.rmi.activation.ActivationSystem
 - java.rmi.activation.Activator