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Why is there an init()method?

pradeep singh
Ranch Hand

Joined: Oct 23, 2007
Posts: 339
Hi to all
Please anybody tell me Why is there an init()method ? In other words ,why is not the constructor enough for initializing a servelet? Please explain in detail and with example if possible.

This is given in HFSJ at page no. 102 but i am unable to understand it(means not got it).


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Aditya Singh
Ranch Hand

Joined: Mar 06, 2008
Posts: 62
So that we can happly override it, without bothering to call super.init(ServletCOnfig)
Ulf Dittmer
Marshal

Joined: Mar 22, 2005
Posts: 41181
    
  45
While Aditya's answer is correct, it's only half the story.

init() is not part of the Servlet interface; it merely makes it easier to work with GenericServlet and HttpServlet.

The method that is part of the Servlet interface is init(ServletConfig config). Its purpose it to pass a ServletConfig object to the servlet (which is needed to perform number of things in the servlet). Since an interface can't specify that there needs to be a constructor with this parameter, it was made a method.


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It is sorta covered in the JavaRanch Style Guide.
 
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