jsf features

Hi,

I was reading about jsf as below


JSF specilizes only on user interface details not concerned about how the rest of the application is implemented. (JSF is only for UI details???)
JSF has support to different renderers and not restricted to HTML alone like other frameworks. (what other renderers JSF support apart from HTML, does frameworks like struts will not support other renderers apart from html???)

WebMVC is provided by jFS(how webMVC different from regular MVC????)

MAnaged beans helps a bridging between the JSP page and the application logic.(how manged bean ties jsp to application logic, what is the meaning of broad term application logic ????)

JSF take help of JSP pages to represent views. (cannot we write jsf views without jsp???)
JSF has special tags to enhance these views. (are there like .jsf files similar to .jsp. what are .xhtml files???)

why we need jsf html tags(we already have html tags which we can use right???). JSF core tags makes sense to me as they help in validation, conversion , event handling.



I have not clearly understood what is the detailed meaning of above sentences.


Please advise.

Any links resources ideas highly appreciated. Thanks in advance
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gudii9Asked:
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girionisCommented:
(JSF is only for UI details???)

Yes. It's about building user interfaces more efficiently.

(what other renderers JSF support apart from HTML, does frameworks like struts will not support other renderers apart from html???)

I guess, XML and stuff, but I am not sure what the text is trying to say. Struts and other frameworks also support other renderers through other technologies (XML, Velocity, XSLT, etc).

WebMVC is provided by jFS(how webMVC different from regular MVC????)

Not sure what this is.

(how manged bean ties jsp to application logic, what is the meaning of broad term application logic ????)

JSF uses managed beans to display information. Business logic is the algorithms you use in order to get a result.

(cannot we write jsf views without jsp???)

You can.

(are there like .jsf files similar to .jsp. what are .xhtml files???)

It means the XML tags like the "commandButton" or "form" tags.

why we need jsf html tags(we already have html tags which we can use right???)

Right. But JSF html tags simplify things and you don't have to write too much HTML code.
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