JSF is java based web application framework which can make interactive web based user interface. It simplifies development by providing a component-centric approach to developing Java Web user interfaces. JSF also ensures that applications are well designed with greater maintainability by integrating the well established Model-View-Controller (MVC) design pattern into it’s architecture.

PrimeFaces is an open source user interface (UI) component library for JavaServer Faces (JSF) based applications. PrimeFaces is a lightweight library with one jar, zero-configuration and no required dependencies.