PrimeFaces
PrimeFaces is an open-source UI component framework for JavaServer Faces (JSF) applications, providing a rich set of pre-built components like data tables, charts, and dialogs. It simplifies the development of enterprise-level web interfaces by offering themes, AJAX support, and mobile responsiveness, enabling developers to create modern, interactive user experiences with minimal effort.
Developers should learn PrimeFaces when building Java-based web applications with JSF, as it accelerates UI development by reducing the need for custom JavaScript and CSS. It is particularly useful for enterprise projects requiring complex data visualization, form handling, and responsive design, such as internal dashboards, admin panels, or customer portals where consistency and productivity are key.