This document provides a step-by-step guide for creating a JSP project in NetBeans and explains the three types of JSP scripting elements: scriptlet tag, expression tag, and declaration tag. It details how to use each tag to execute Java code, output values, and declare fields or methods within a JSP. Additionally, it outlines the differences between scriptlet and declaration tags regarding their placement and capabilities.

1. SESSION – 2
By→ Anuj Kumar Singh

2. Creating JSP project in NetBeans
1. Open NetBeans IDE
2. Click on project
3. Select Java Web and
Web Application.
4. Click on Next

3. 5. Write Project Name.
6. Click on Next

4. 7. In Server and Setting choose Apache Tomcat Server.
8. Click on Next.

5. 9. Click on Finish.

6. Example
a. index.html

7. b. newjsp.jsp
Output

8. JSP Scriptlet Tag
The scripting elements provides the ability to insert java code inside
the jsp.
There are three types of scripting elements:
1. scriptlet tag
2. expression tag
3. declaration tag
1. Scriptlet Tag
A scriptlet tag is used to execute java source code in JSP.
Syntax is as follows:
<% java source code %> (above example is of Scriptlet Tag)

9. 2. JSP expression tag
The code placed within JSP expression tag is written to the output
stream of the response. So you need not write out.print() to
write data. It is mainly used to print the values of variable or
method.
<%= statement %>
Example
a. index.html

10. b. newjsp.jsp
Output
3. JSP Declaration Tag
The JSP declaration tag is used to declare fields and methods.
The code written inside the jsp declaration tag is placed outside the
service() method of auto generated servlet. So it doesn't get memory
at each request.

11. <%! field or method declaration %>
Example
newjsp.jsp
Output

12. Difference between JSP Scriptlet Tag and JSP Declaration Tag
Jsp Scriptlet Tag Jsp Declaration Tag
The jsp scriptlet tag can only
declare variables.
The jsp declaration tag can declare
variables as well as methods.
The declaration of scriptlet tag is
placed inside the _jspService()
method.
The declaration of jsp declaration
tag is placed outside the
_jspService() method.