This is not EJB code but rather JNDI, and this is all there is to it. Using JNDI is similar to looking up a file in a directory. Use the MouseOver to see the description of each piece of the code.
The EJB 1.1 spec. calls for use of the narrow() to ensure portability with RMI-IIOP .
This is the predominant protocol RMI will use in the future.
Remote Method Invocations
A remote procedure call (RPC) is a procedural invocation from a process on one machine to a process on another machine. RPCs enable traditional procedures
to reside on multiple machines, yet still remain in communication. They are a simple way to perform cross-process or cross-machine networking.
A remote method invocation in Java takes the RPC concept one step further and allows for distributed object communications. RMI-IIOP allows you to invoke methods on objects remotely, not merely procedures.
You can build your networked code as full objects. This yields the benefits of an object-oriented programming, such as inheritance, encapsulation, and polymorphism.
In the next lesson, you will be introduced to code in the client used to create the session bean.
RMI-IIOP: The protocol, based on IIOP, that is planned for the implementation of RMI.