EJB & JSP: Java On The Edge, Unlimited Edition by Lou Marco ISBN: 0764548026 Your Guide to Cutting-Edge J2EE Programming Techniques. Chapter 11: A First Look at EJB Overview You ve spent some time reading about JavaServer Pages, sometimes referred to as the front door to J2EE applications. In Part III, you can read about Enterprise JavaBeans. As mentioned in Chapter 1, Enterprise Computing Concepts, Enterprise JavaBeans are a server-side software component architecture. In other words, the Enterprise JavaBeans specification describes how to develop distributed objects and how to deploy these objects in a distributed computing environment. This chapter provides an introduction to Enterprise JavaBeans (EJBs). This chapter s first order of business is to dispense with the belief that Enterprise JavaBeans are related to JavaBeans. Then you can read about the ambitious goals of the EJB architecture. EJB release 1.1 is discussed here, along with features of EJB release 2.0 (Sun released the final draft on October 25, 2000). This chapter also introduces the important topic of EJB Roles and how these roles enable the development of compatible EJBs by different vendors.
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