2)Write a servlet which counts how many times a user has visited a web page. If the user is visiting the page for the first time, display a welcome message. If the user is revisiting the page, display the number of times visited. (Use cookies)
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class HitCount extends HttpServlet
{
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException,IOException
{
response.setContentType("text/html");
PrintWriter out = response.getWriter();
Cookie c[]=request.getCookies();
if(c==null)
{ Cookie cookie = new Cookie("count","1");
response.addCookie(cookie);
out.println("<h3>Welcome Servlet<h3>"+ "Hit Count:<b>1");
}
else
{
int val=Integer.parseInt(c[0].getValue())+1;
c[0].setValue(Integer.toString(val));
response.addCookie(c[0]);
out.println("Hit Count:"+val+"");
}
}
}
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