Table of Content

JSP Introduction

JSP Scriptlet Element


JSP Scriptlet :

  1. Scriptlet tag is used to execute java source code in JSP.
  2. Scriplet can also have variable and method declaration

Syntax of Scriptlet :

<% code fragment %>

XML equivalent of the above syntax as follows :

<jsp:scriptlet>
   code fragment
</jsp:scriptlet>

Simple Snippet :

We can embed Scriplets inside the HTML tags to make them stylish.

<?php
<html>
<head><title>Hello World</title></head>
<body>
<%
out.println("Remote IP   : " + request.getRemoteAddr());
%>
</body>
</html>
?>

Output :

Remote IP : 127.0.0.1

Consider the following example -

<html>
<body>
  <form action="welcome.jsp">
    <label>Enter Roll :</label> 
    <input type="text" name="sroll"><br />
    <label>Enter Name :</label> 
    <input type="text" name="sname">
    <input type="submit" value="Submit">
  </form>
</body>
</html>

above index.html file will be used for accepting the user data and submit button will send the details to JSP page for further processing.

<html>
<body>
	<%
	String roll = request.getParameter("sroll");
	String name = request.getParameter("sname");
	out.print("Student Roll : " + roll);
	out.print("<br />");
	out.print("Student Name : " + name);
	%>
</body>
</html>

file welcome.jsp will do all type of processing,

String roll = request.getParameter("sroll");
String name = request.getParameter("sname");

getParameter method of request object will access the parameters passed by form.

Output :

JSP form page

After clicking on submit button -

jsp response page