Count the visits on web page - Java Program

CounterServlet.java

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class CounterServlet extends HttpServlet
{
     //Instance variable used for counting hits on this servlet
     private int iHitCounter;

     //init method just initializes the hitCounter to zero
     public void init() throws ServletException
     {
          iHitCounter = 0;
     }
     public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
     {
          PrintWriter out =  response.getWriter();
          out.println("<form><fieldset style='width:15%'>");
          out.println("<h3>Welcome to my website !</h3><hr>");
          out.println("You are visitor number: "+ (++iHitCounter));
          out.println("</fieldset></form>");
     }
     public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
     {
          doGet(request, response);
     }
}