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In this architecture, only one application is serving three different agents using three dif-
ferent RenderKits--Hypertext Markup Language (HTML), Wireless Markup Language (WML),
and Telnet. In practice, the application would probably still be three different pages but with a
main difference; they will all be built on the same technology--JSF and Java. This will both
save development time and reduce maintenance. Furthermore, and perhaps most important,
JSF establishes standards, which are designed to be leveraged by tools (such as Oracle JDevel-
oper, Sun Studio Creator, and Eclipse plug-ins such as Exadel Studio) to provide developers
with the ease of use that has long been sought in the J2EE developer community.

JSF Architecture
From a satellite view, JSF implements what is known as the Model 2 pattern, which is based on
the MVC architecture. If you look at how the Model 2 pattern is applied in a JSF application,
you can see it consists of three elements--the view, the navigation model, and the application
logic, as shown in Figure 1-3.

C H A P T E R 1
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T H E F O U N D AT I O N O F J S F : C O M P O N E N T S
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