title: Sometimes I see JSF URL is *.jsf, sometimes *.xhtml and sometimes /faces/*. Why?
body: <p>Been try to learn JSF, and sometimes I see the URL is <code>*.jsf</code> and sometimes is <code>*.xhtml</code> or <code>/faces/*</code>. Can someone fill my knowledge, please? When I create a JSF using Facelet, the file extension is <code>.xhtml</code>, so where does <code>.jsf</code> URL extension come from?</p>