January 19th, 2008
EJB & JSP: Java On The Edge, Unlimited Edition by Lou Marco ISBN: 0764548026 Your Guide to Cutting-Edge J2EE Programming Techniques. Summary You ve just taken a quick tour of Enterprise JavaBeans. You ve learned that EJBs are distributed, server-side software components that live inside an abstraction called a container. You ve been introduced to the goals of the EJB architecture. You ve learned that the EJB specification provides for three different types of enterprise bean the session bean, the entity bean and, with release 2.0, the message bean. You ve learned that clients do not access enterprise beans directly; rather, they access enterprise beans by going through the bean s home or remote interface. You ve read about the deployment descriptor, which enables you to customize an enterprise bean s behavior without changing the bean s source code. You ve also been introduced to the concept of EJB roles and how these roles are important to the software component market. This should be enough to let us begin to dig into EJBs in detail with some coding examples in the next chapter.
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