System Implementation

Now that we have seen the user flow for the EPS application, in this section we take a detailed look at each of the implementation source files. We begin by describing how to develop applications and then expose them as Web services. Next, we look at how to implement the client application including the Web service invocations as well as other business logic. And, finally, we describe how to develop presentation code in the form of static HTML pages, J2EE servlets, as well as Java Server Pages (JSPs) that can invoke and leverage Web service functionality.

Figure 12-6 depicts the steps by which a Web service is created, deployed, and registered as well as how a client application access the functionalities of each Web service. ...

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