The Free On-line Dictionary of Computing (19 January 2023):

JavaServer Faces
JSF

    (JSF) A system for building web
   applications by assembling reusable user interface
   components in a web page, connecting these components to a
   data source and passing client events to server handlers.

   (http://java.sun.com/j2ee/javaserverfaces/overview.html).

   (2006-07-21)