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Overview of EJB Technology

 
Author: informit.com
Category: SCBCD
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This chapter describes EJB technology in outline and provides an overview of the interaction between the EJB, the client, and the EJB container. It also describes the EJB objects and home objects, and explains why the use of these constructs—although perhaps somewhat confusing at first— ultimately simplifies the development of substantial software projects. We begin by examing how an EJB is seen by its clients, which may be synchronous, using RMI, or asynchronous, using messaging. We then discuss the Java entities that make up an EJB, the home interfaces, local interface, remote interface, and implementation class, and how they are packaged with a deployment descriptor to make a complete EJB.

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