Example : How to Display Colorful Message in JSP?
// To display colorful text messages.
out.println("<span style='color:red'>Codershelpline to all</span>");
//to display colorful background.
out.println("<span style='background:green'>Codershelpline to all</span>");
Example : Write a JSP program to create a Simple Calculator.
<%--
Document : newjsp
Created on : 8 Mar, 2024, 8:31:16 PM
Author : admin
--%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<%
String sub1=request.getParameter("sub");
try
{
if(sub1!=null)
{
int val1=Integer.parseInt(request.getParameter("num1"));
int val2=Integer.parseInt(request.getParameter("num2"));
//String value1=(request.getParameter("num1"));
//String value2=(request.getParameter("num2"));
//int val1=Integer.parseInt(value1);
//int val2=Integer.parseInt(value2);
if(sub1.equals("Addition"))
{
int result1= val1 + val2;
out.println("The addition result is = " + result1);
}
else if(sub1.equals("Subtraction"))
{
int result2= val1 - val2;
out.println("The subtraction result is = " + result2);
}
else if(sub1.equals("Multiplication"))
{
int result3= val1 * val2;
out.println("The multiplication result is = " +result3);
}
else if(sub1.equals("Division"))
{
int result4= val1 / val2;
out.println("The division result is = " +result4);
}
else
{
int result5= val1 % val2;
out.println("The remainder division result is = " +result5);
}
}
}
catch(Exception e)
{
out.println(e);
}
%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Simple Calculator</title>
<h1><center>Basic Calculator Program</center></h1>
</head>
<body>
<center>
<form action="#" method="post">
<label><b>Number 1</b></label>
<input type="text" name ="num1" placeholder="Enter First Number"><br><br>
<label><b>Number 2</b></label>
<input type="text" name="num2" placeholder="Enter Second Number"><br><br>
<input type ="submit" name = "sub" value="Addition">
<input type = "submit" name = "sub" value="Subtraction">
<input type="submit" name="sub" value ="Multiplication">
<input type = "submit" name="sub" value="Division">
<input type = "submit" name="sub" value="Mod Division">
<input type="reset" value="Reset">
</form>
</center>
</body>
</html>
----------------- OR -------------------
<%--
Document : newjsp
Created on : 8 Mar, 2024, 8:31:16 PM
Author : admin
--%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Simple Calculator</title>
<h1><center>Basic Calculator Program</center></h1>
</head>
<body>
<%
try
{
if (request.getParameter("sub") != null)
{
int val1=Integer.parseInt(request.getParameter("num1"));
int val2=Integer.parseInt(request.getParameter("num2"));
//String value1=(request.getParameter("num1"));
//String value2=(request.getParameter("num2"));
//int val1=Integer.parseInt(value1);
//int val2=Integer.parseInt(value2);
if(request.getParameter("sub").equals("Addition"))
{
int result1= val1+val2;
out.println("The addition result is = " + result1);
}
else if(request.getParameter("sub").equals("Subtraction"))
{
int result2= val1-val2;
out.println("The subtraction result is = " + result2);
}
else if(request.getParameter("sub").equals("Multiplication"))
{
int result3= val1*val2;
out.println("The multiplication result is = " +result3);
}
else if(request.getParameter("sub").equals("Division"))
{
int result4= val1/val2;
out.println("The division result is = " +result4);
}
else
{
int result5= val1%val2;
out.println("The remainder division result is = " +result5);
}
}
}
catch(Exception e)
{
out.println(e);
}
%>
<center>
<form action="#" method="post">
<label><b>Number 1</b></label>
<input type="text" name ="num1" placeholder="Enter First Number"><br><br>
<label><b>Number 2</b></label>
<input type="text" name="num2" placeholder="Enter Second Number"><br><br>
<input type ="submit" name = "sub" value="Addition">
<input type = "submit" name = "sub" value="Subtraction">
<input type="submit" name="sub" value ="Multiplication">
<input type = "submit" name="sub" value="Division">
<input type = "submit" name="sub" value="Mod Division">
<input type="reset" value="Reset">
</form>
</center>
</body>
</html>
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