HTML FILE
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title> New Document </title>
<meta name="Generator" content="EditPlus">
<meta name="Author" content="">
<meta name="Keywords" content="">
<meta name="Description" content="">
</head>
<body>
<form method="POST" action="http://localhost:8080/ZWebApp/calc">
Enter First Number : <input type="text" name="first">
<br><br><br>
Select Operator : <input type="radio" name="operator" value="add" selected=true>+ <input type="radio" name="operator" value="sub">- <input type="radio" name="operator" value="mul">* <input type="radio" name="operator" value="div">/ <input type="radio" name="operator" value="mod">%
<br><br><br>
Enter Second Number : <input type="text" name="second">
<br><br><br>
<input type="submit" value="Perform Operation">
</form>
</body>
</html>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title> New Document </title>
<meta name="Generator" content="EditPlus">
<meta name="Author" content="">
<meta name="Keywords" content="">
<meta name="Description" content="">
</head>
<body>
<form method="POST" action="http://localhost:8080/ZWebApp/calc">
Enter First Number : <input type="text" name="first">
<br><br><br>
Select Operator : <input type="radio" name="operator" value="add" selected=true>+ <input type="radio" name="operator" value="sub">- <input type="radio" name="operator" value="mul">* <input type="radio" name="operator" value="div">/ <input type="radio" name="operator" value="mod">%
<br><br><br>
Enter Second Number : <input type="text" name="second">
<br><br><br>
<input type="submit" value="Perform Operation">
</form>
</body>
</html>
SERVLET FILE
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
public class Calculator extends HttpServlet
{
public void init(ServletConfig config) throws ServletException
{
super.init(config);
}
public void doPost(HttpServletRequest request,HttpServletResponse response) throws ServletException,IOException
{
PrintWriter pw;
response.setContentType("text/html");
pw=response.getWriter();
int num1=Integer.parseInt(request.getParameter("first"));
int num2=Integer.parseInt(request.getParameter("second"));
String operator=request.getParameter("operator");
pw.println("<html><body>");
if (operator.equals("add"))
{
pw.println(""+num1+" + "+num2+" = "+(num1+num2));
}
else if (operator.equals("sub"))
{
pw.println(""+num1+" - "+num2+" = "+(num1-num2));
}
else if (operator.equals("mul"))
{
pw.println(""+num1+" * "+num2+" = "+(num1*num2));
}
else if (operator.equals("div"))
{
pw.println(""+num1+" / "+num2+" = "+(num1/num2));
}
else
{
pw.println(""+num1+" % "+num2+" = "+(num1%num2));
}
pw.println("</body></html>");
pw.close();
}
}
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