What is portableremoteobject.narrow() method , JAVA Programming

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What is PortableRemoteObject.narrow() method and what is used for?

Ans) Java RMI-IIOP gives a mechanism to narrow the the Object you have received from from your lookup, to the appropriate type. This is complete through the javax.rmi.PortableRemoteObject class and, more explicitly, using the narrow() method.

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