DEPARTMENT OF COMPUTER
SCIENCE
ANATOMY OF A JSP PAGE & JSP
SYNTAX
BY
NADAR SARASWATHI
COLLEGE OF ATRS AND SCIENCE,THENI.

JSP PAGE
 A JSP is a normal web page with JSP
elements for generating the parts of the web
page that differ for each request.
 A simple JSP web page that contains the JSP
elements and template text.
 Everything on the page that is not a JSP
element is called template text.

 Template text can be any text , i.e.,
HTML,XML,WML or even plain text.jsp has no
dependency on HTML ,it can be used with
any markup language.
 Template text is always passed straight to the
browser

JSP ELEMENTS
 There are three types of JSP elements
present:
 Action
 Directive
 Scripting

DIRECTIVE ELEMENT
 Define page-dependent attributes , such as
session tracking , error page , and buffering
requirement
 Is used for importing a package.
 Is used for handling an exception.
EXAMPLE:
<%@ include file=“filename” %>
<%@ include file=“header.jsp” %>

ACTION TAG/ELEMENT:
 JSP acti0n tags or element are used to
perform some specific tasks.
 The action tags are used to control the flow
between pages to use java beans.
 There are many JSP action tags.
 Jsp : forward : forward the request and
response to another resources.
 Jsp : include: include another resources.

SCRIPTING ELEMENT:
 Scriplet elements must be written within the
<%....%> tags.
 The scriptlets tag allows writing java code
statement within the jsp page.
 There are three main subdivision of scripting
elements in java server pages:
 Expression tag
 Scriptlets tag
 Declaration tag

JSP SYNTAX:
JSP DECLARATION:
 A Declaration declares one or more variable or
methods that you can use in java code later in
the jsp file.
 You must declare the variable or methods before
you use it in the jsp file.
XML EQUIVALENT:
<jsp:declaration>
code fragment
</jsp:declaration>

JSP EXPRESSION:
 A JSP expression element contains a scripting
language expression that is evaluated ,
converted to a string, and inserted where the
expression appears in the jsp file.
 Because the value of an expression is
converted to a string, you can use an
expression within a line of text , whether print
it is tagged HTML , in a JSP file.

Thank you