ADDITION OF TWO NUMBERS USING JSP & SERVLET
For a complete tutorial on how to add two numbers using JSP & Servlet And How JSP & Servlet works together?
PROGRAM TO ADD TWO NUMBERS USING JSP & SERVLET
SOURCE CODE :
addTwoNumber.jsp
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<title>Add Two Number</title>
</head>
<body>
<h1 align="center" style="color:red">ADD TWO NUMBER</h1>
<%
String result=(String)request.getAttribute("result");
%>
<%
if(result!=null)
{
%>
<h3 align="center" style="color:red">Sum of two number is <span style="color:blue"><%=result %></span></h3>
<%
}
%>
<div align="center">
<form action="AddNoServlet" method="post">
<table>
<tr>
<td>Enter 1st number: </td>
<td><input type="text" name="no1"></td>
</tr>
<tr>
<td>Enter 2nd number: </td>
<td><input type="text" name="no2"></td>
</tr>
<tr>
<td><input type="submit" value="Add Numbers"></td>
</tr>
</table>
</form>
</div>
</body>
</html>
AddNoServlet.java
import java.io.IOException;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
@WebServlet("/AddNoServlet")
public class AddNoServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
public AddNoServlet() {
super();
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
response.getWriter().append("Served at: ").append(request.getContextPath());
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
System.out.println("Entered into Servlet.");
String number1=request.getParameter("no1");
String number2=request.getParameter("no2");
int no1=Integer.parseInt(number1);
int no2=Integer.parseInt(number2);
int sum=no1+no2;
String result=String.valueOf(sum);
request.setAttribute("result",result);
RequestDispatcher rd=request.getRequestDispatcher("addTwoNumber.jsp");
rd.forward(request, response);
}
}
IMAGE REFERENCED IN THE VIDEO FOR EXPLAINING THE CONCEPTS.
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