The RMI Optional Package (RMI OP) is a subset of J2SE 1.3's
RMI functionality used in CDC-based profiles that
incorporate the Foundation Profile, such as the Personal
Basis Profile and the Personal Profile. The RMIOP cannot be
used with CLDC-based profiles because they lack object
serialization and other important features found only in
CDC-based profiles. RMIOP supports most of the J2SE RMI
functionality, including the Java Remote Method Protocol,
marshalled objects, distributed garbage collection,
registry-based object lookup, and network class loading, but
not HTTP tunneling or the Java 1.1 stub protocol.