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> ## What is a JavaServer Faces Application?

> For the most part, a JavaServer Faces application is like any other Java web application. A typical JavaServer Faces application includes the following pieces:

> - A set of JSP pages (although you are not limited to using JSP pages as your presentation technology)
> - A set of backing beans, which are JavaBeans components that define properties and functions for UI components on a page
> - An application configuration resource file, which defines page navigation rules and configures beans and other custom objects, such as custom components
> - A deployment descriptor (a `web.xml` file)
> - Possibly a set of custom objects created by the application developer. These objects might include custom components, validators, converters, or listeners.
> - A set of custom tags for representing custom objects on the page.

> A JavaServer Faces application that includes JSP pages also uses the standard tag libraries defined by JavaServer Faces technology for representing UI components and other objects on the page.