Summary
Today, you looked in more detail at J2EE and the facilities that it provides. You saw how the different J2EE technologies fit into the n-tier model, and how it provides component frameworks for different types of functionality. You have also seen how Enterprise JavaBeans (EJBs), JavaServer Pages (JSPs) and servlets are the main user-defined components of a J2EE application. You have also seen how supporting J2EE technologies are used to provide cross-component functionality, such as data access, network communication, naming services, transaction management, and security.
You have seen that the separate functions of tool provider, developer, assembler, deployer and administrator work co-operatively to implement and manage the many stages ...
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