Ecommerce web host - 52 Chapter 2 Summary In this chapter, we ve
52 Chapter 2 Summary In this chapter, we ve taken a whirlwind tour of EJB. We started by looking at what a bean is, and then discussed the different kinds of beans, including session, entity, and message-driven beans. We then took a bean apart into its constituent pieces, and examined each part: the enterprise bean class, remote interface, local interface, EJB object, local object, home interface, home object, deployment descriptor, and Ejb-jar file. Now that you understand the high-level concepts, let s learn how to write and use each type of EJB component, starting with a simple Hello World example.
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