1) A UnicastRemoteObject is a convenience class, defined in the RMI public API, that can be used as a superclass for remote object implementations. The superclass UnicastRemoteObject supplies implementations for a number of java.lang.Object methods (equals, hashCode, toString) so that they are defined appropriately for remote objects. UnicastRemoteObjectalso includes constructors and static methods used to export a remote object, that is, make the remote object available to receive incoming calls from clients.