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Quintessential Servlet
Posted on: July 2, 2008 at 12:00 AM

Quintessential servlet is not any special kind of servlet. It is just a proper and appropriate way to write a servlet.

Quintessential Servlet

Example program for Quintessential servlet

Quintessential servlet is not any special kind of servlet. It is just a proper and appropriate way to write a servlet. This quintessential servlet means that servlet is having accurate way of code written for an organizations servlet. The word "Quintessential" means appropriate, best, classical, essential format of code writing . This example implements a servlet that handles GET requests. The example of this "Quintessential servlet" is given as below:


package com.mycompanyname;

 

import java.io.*;



import javax.servlet.*;



import javax.servlet.http.*;



  



public class MyServletName extends HttpServlet {



   //  This method is called by the servlet 

  
container just before this servlet

  // is put into service. Note that it 

  
is possible that more than one

 //  instance of this servlet can be 

  
created in the same VM.



  public void init() throws ServletException {

  //  Initialization code

  getServletContext().log("getinit init");

  //  Get the value of an initialization parameter

  String value = getServletConfig().getInitParameter("param1");

  

  //  Get all available intialization parameters

  java.util.Enumeration enum = 

  
getServletConfig().getInitParameterNames();

  for (; enum.hasMoreElements(); ) {

  //  Get the name of the init parameter

  String name = (String)enum.nextElement();

  

  //  Get the value of the init parameter

  value = getServletConfig().getInitParameter(name);

  }

  

  //  The int parameters can also be retrieved using

 
the servlet context

  value = getServletContext().getInitParameter("param1");

  }

  //  This method is called by the servlet container 

  to process a GET request.



  //  There may be many threads calling this 

  method simultaneously.



  public void doGet(HttpServletRequest req, 

  
HttpServletResponse resp) 

 
throws IOException {



  PrintWriter out = resp.getWriter();



  out.println("<html><head><title>A Simple 

  Servlet</title></head><body>");



  out.println("Today is "+(new java.util.Date()));



  out.println("</body></html>");



  out.close();



  }



  //  This method is called by the servlet container

  just after this servlet

 //  is removed from service.



  public void destroy() {



  //  Shutdown code...



  }

  }

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