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Stands for JavaServer Faces. JSF is a framework that allows Web developers to build user interfaces for JavaServer applications. It is supported by Web servers running Java Enterprise Edition (Java EE).
JSF simplifies the creation of Web applications by providing a standard set of tools (or an API) for building user interfaces. For example, instead of coding a Web form in HTML, a developer can instead call a simple JSF function that generates the form. Another JSF function may be used to process the data entered by the user. These functions are processed on the server and the resulting data is output to the clients browser.
JSF benefits developers by providing reusable objects that can easily be inserted into webpages. However, these components are also beneficial to website visitors since they produce standardized interface elements. Since the Java code is processed on the server, the appearance of the generated Web objects is consistent across multiple websites. Additionally, JSF components are tested on multiple platforms, so they work well in all major browsers.