A NoSuchObjectException is thrown if an attempt is made to
invoke a method on an object that no longer exists in the remote virtual
machine. If a NoSuchObjectException occurs attempting to
invoke a method on a remote object, the call may be retransmitted and still
preserve RMI's "at most once" call semantics.
A NoSuchObjectException is also thrown by the method
java.rmi.server.RemoteObject.toStub and by the
unexportObject methods of
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