What is anatomy of java servlet?

Answer 1

A Servlets skeleton would look like below:

/*

* servlet name

*

* servlet description

* All other stuff that is part of a Standard Class comment section

*/

//package declarations

//import statements

public class ServletName extends HttpServlet {

// Instance Variables

/**

* Code to Initialize the Servlet

*/

public void init() throws ServletException

{

// Servlet Initialization Code goes here

}

/**

* The Service Method

* Gets invoked for every request submitted to the Servlet

* This method is optional. We mostly use doGet, doPost Methods

*/

protected void service(HttpServletRequest req,

HttpServletResponse resp)

throws ServletException, IOException

{

// Code for the Service Method goes here

}

/**

* Process a GET request

*

*/

protected void doGet(HttpServletRequest request,

HttpServletResponse response)

throws IOException, ServletException

{

// Code for the doGet() method goes here

}

/**

* Process a POST request

*

*/

protected void doPost(HttpServletRequest request,

HttpServletResponse response)

throws IOException, ServletException

{

// Code for the doPost() method goes here

}

/**

* Process a PUT request

*

*/

protected void doPut(HttpServletRequest req,

HttpServletResponse resp)

throws ServletException, IOException

{

//Code for the doPut() method goes here

}

/**

* You can have any number of methods for your processing

* here. There is no limit as to the number of methods or

* any restrictions on what you can name them.

* Since this is all java code, you need to keep them

* syntactically correct as per Java Coding Standards.

*/

/**

* Clean-Up

*/

public void destroy()

{

// clean up activities before the Servlet is put to death

}

}