thanks Gokul for u r clarification,
i want to know whether a ftp client request can be processed by a
httpservlet, can it also be done using GenericServlet
regards
K.Chandra Shekar
----- Original Message -----
From: Gokul Singh <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Tuesday, September 19, 2000 11:41 AM
Subject: Re: difference between doGet and doPost
> > Can you please enlighten me of what is the difference between Generic
> > Servlet and HttpServlet.
>
> The differance between the two is that HttpServlet is a servlet which is a
> specialized version of the Generic Servlet to handle the Http protocol
and
> has convinience methods/classes related to it in the javax.servlet.http
> pacakage.
> The Generic Servlet is an abstract class. It is there to define the frame
> work for use of servlets. Generic Servlet has to be extended as per the
> protocol you wish to use it for. As for the HTTP protocol, sun has already
> done the work for you.
>
>
> > Ok let me first tell you of my understanding.. when your servlet extends
> > Generic Servlet the life cycle is init(), service(), destroy()......
>
> That is correct. Its the same for all servlets.
>
> >and if
> > it extends HttpServlet the life cycle is init(), doGet(), doPost(),
> > destroy()......
>
> This is wrong. For HttpServlet also it is init(), service(), destroy().
>
>
> > How is our servlet which extends HttpServlet , invoke the doGet()
method,
> if
> > the client request is get. and how is the doPost() method is invoked if
> the
> > client request is post....
>
> All request to any servlet is passed to it's Service method. Period.
> Now it is up to the service method how to handle the request.
> The HttpServlet class has an implementation of the service method which
> takes the request, finds out the method used in the HTTP request ( Get,
> Post, Head, Put...) and passes control to the corresponding doXXX method
> with the appropriate request and response objects.
> So for a request which is Get the control will be
> httpServlet.service ---> httpServlet.doGet
>
>
> > can the same be achieved with a servlet which extends Generic Servlet.
>
> The httpServlet achieves this and it extends the Generic Servlet. The
> Generic Servlet is there to define the frame work and not do any
meaningful
> work on its own. That is why it is abstract.
>
> > regards
> > Chandra Shekar
>
> Gokul
>
>
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