RMI/IIOP
Despite the fact that RMI and IIOP seem to do the same thing, they actually complement each other. IIOP is a protocol, a specification of how distributed objects can communicate with one another. RMI is more than a specification; it is a concrete product. RMI is a high-level programming interface that makes the location of the server transparent to the client. Moreover, RMI is a Java-to-Java product, specifying how two Java components can communicate with each other. If Java components on the client need to interact with C++, COBOL, or Ada components on the server, using IIOP is the solution. If only Java components will provide the public interface to client components, RMI is a good candidate. Apart from some subtleties in their implementations ...
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