Java Server Faces (JSF) is a component-oriented framework for building
web application using Java. JSF makes it easy to build web application
by automating common tasks such as populating input parameter values
into Java Beans by parsing input parameters, performing validations, and
rendering or updating views. But building web application with rich User
Interfaces (UI) still remains a challenge as Java developers may or may not be
good at building fancy UI components using HTML, JavaScript directly. As JSF is
a component-based framework, it allows building custom UI components with
rich look and feel and can be reusable in any project.
The good news is that there are many open source and proprietary frameworks
providing readymade reusable UI components, which can be used in any
JSF-based applications. Among the several UI component libraries available
today, PrimeFaces is an outstanding UI component library in terms of features
and ease of use.