3.2. Fundamentals of the EJB architecture
An EJB is essentially a software component on which method calls can be made, and which can itself make calls on other components. These calls may be made over a network. In this sense, EJB technology is similar to Java RMI and CORBA. However, there are some defining features of EJBs that make EJB development rather different from (and easier than) other techniques for developing distributed applications. In Version 2.0 of the EJB Specification, EJBs are allowed to interact using local calling semantics, as well as distributed, RMI-like techniques.
Here are some other important features of the EJB architecture.
The client’s view of an EJB is defined strictly by interfaces As we have already seen, synchronous ...
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