What is the difference between JSF and Facelets?

Question

I am following the Java EE6 tutorials and I don\'t understand the difference between JSF and Facelets. Chapter 4 goes has a section \'Developing a Simple JavaServerFaces App

Answer 1

JSF is used with Facelets, before we were using jsp. Facelet is a view technology based on xml.

Facelets was originally created as a separate, alternative view declaration language for JSF 1.1 and JSF 1.2 which both used JSP as the default view declaration language. Starting from JSF 2.0, Facelets has been promoted by the JSF expert group to be the default view declaration language. JSP has been deprecated.

Important features facelets provides are templating, composite components, content reuse.

http://www.ibm.com/developerworks/library/j-facelets/