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Small doubt on servlets class  RSS feed

 
Supriya Nimakuri
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what is the relation between GenericSerlet and HttpServlet.

Is GenricServlet the super class for HttpServlet..

Question 2:

What is the role of initialization in Servlet life cycle. what actually it initializes.

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Charles Lyons
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Is GenricServlet the super class for HttpServlet..
Yes; GenericServlet is a protocol-independent implementation of Servlet, basially providing storage of the ServletConfig and a new init() method for convenience. HttpServlet takes this one step further, and adds the convenient doXxx() methods. You can extend either (or implement Servlet directly) to create a servlet, but using HttpServlet as a base class is most common.
What is the role of initialization in Servlet life cycle. what actually it initializes.
Initialisation is a stage in the servlet's life invoked by the container. The servlet can use the initialisation stage to manage any start-up conditions, such as extracting initialisation parameters from the ServletConfig, or perhaps opening connections to persistent data stores (you must however be careful about multi-threading if you do this). It isn't that the servlet is initialising anything else, but rather that the servlet itself is being initialised.
 
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