JAVA SERVER FACES (JSF)

JSF provide a clean and standard architecture of Java framework for building a web application. It separate the areas of concern involved in building and running a GUI-based application. But the JSF provide 8 main design goals-

1. Define a set of simple, lightweight Java base classes for UI components, component state, and input events. These classes will address UI lifecycle issues, notably managing a component’s persistent state for the lifetime of its page.
2. Create a standard UI component framework that can be leveraged by development tools to make it easier for tool users to both create high-quality UIs and manage the UI’s connections to application behavior.
3. Provide a set of common UI components, including the standard HTML form input elements. These components will be derived from the simple set of base classes (outlined in #1) that can be used to define new components.
4. Provide a JavaBeans model for dispatching events from client-side UI controls to server-side application behavior.
5. Specify a model for internationalization and localization of the UI
6. Define APIs for input validation, including support for client-side validation.
7. Provide for automatic generation of appropriate output for the target client, taking into account all available client configuration data, such as the browser version.
8. Provide for automatic generation of output containing required hooks for supporting accessibility, as defined by the Web Accessibility Initiative (WAI).