Write a Web Application using Servlet to find the sum of all the digit of an input integer

Write a Web Application using Servlet to find the sum of all the digit of an input integer.

index.html

<!DOCTYPE html>

<html>

<head>

<title>TODO supply a title</title>

<meta charset="UTF-8">

<meta name="viewport" content="width=device-width, initial-scale=1.0">

</head>

<body>

<form method="get" action="NewServlet">

<p>enter any no:<input type="text" name="no"><br><br></p>

<input type="submit" value="submit">

</form>

</body>

</html>

NewServlet.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 NewServlet extends HttpServlet

{

   protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException

{

   response.setContentType("text/html;charset=UTF-8");

   PrintWriter out = response.getWriter();



try

   {

   int n,s=0,r,x;

n=Integer.parseInt(request.getParameter("no"));

x=n;

   while(x!=0)

   {

   r=x%10;

   s=s+r;

   x=x/10;

   }

out.println("sum of all digits is:"+s);



   }

   catch(Exception e)

   {

   out.printf("error");

   }

   }

}

web.xml

<?xml version="1.0" encoding="UTF-8"?>

<web-app version="3.1" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd">

<servlet>

<servlet-name>NewServlet</servlet-name>

<servlet-class>NewServlet</servlet-class>

</servlet>

<servlet-mapping>

<servlet-name>NewServlet</servlet-name>

<url-pattern>/NewServlet</url-pattern>

</servlet-mapping>

<session-config>

<session-timeout>

30

</session-timeout>

</session-config>

</web-app>

Write a Web Application using Servlet to find the sum of all the digit of an input integer

Write a Web Application using Servlet to find the sum of all the digit of an input integer

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