Java EE 6: JSF vs Servlet + JSP. Should I bother learning JSF?

Question

I am trying to get familiar with Java EE 6 by reading http://java.sun.com/javaee/6/docs/tutorial/doc/gexaf.html. I am a bit confused about the use of JSF.
Usually, the w

Answer 1

JSF provide an abstraction layer with several responsibilities, but most important it handles all the messy details of HTML forms and transferring data back and forth between web pages and Java POJO beans (getX, setX methods), which is notoriously difficult to do right.

It also provides navigation and in the latest incarnation in Java EE 6 rudimentary AJAX support is available allowing for simple updates of the web page as the user inputs data.

You might find it easier to think of it as a way to avoid writing JavaScript yourself.