Provides support for RMI Object Activation. A remote object's reference can be made ``persistent'' and later activated into a ``live'' object using the RMI activation mechanism.

Implementations are not required to support the activation mechanism. If activation is not supported by this implementation, several specific activation API methods are all required to throw {@code UnsupportedOperationException}. If activation is supported by this implementation, these methods must never throw {@code UnsupportedOperationException}. These methods are denoted by the presence of an entry for {@code UnsupportedOperationException} in the Throws section of each method's specification. @since 1.2