JavaBeat

  • Home
  • Java
    • Java 7
    • Java 8
    • Java EE
    • Servlets
  • Spring Framework
    • Spring Tutorials
    • Spring 4 Tutorials
    • Spring Boot
  • JSF Tutorials
  • Most Popular
    • Binary Search Tree Traversal
    • Spring Batch Tutorial
    • AngularJS + Spring MVC
    • Spring Data JPA Tutorial
    • Packaging and Deploying Node.js
  • About Us
    • Join Us (JBC)
  • Privacy

JSTL XML x:if Tag

February 27, 2014 by Krishna Srinivasan Leave a Comment

The <x: if> tag evaluates an XPath expression. If the result is true then the body of the tag is evaluated, otherwise not. It is used to check the conditional value.

Syntax of <x: if> Tag

[code lang=”html”]
<x: if attributes> body content </x: if>
[/code]

Attributes of <x: if> Tag

Attributes Description
select To evaluate the particular object it specifies xml Xpath expression.
var It specifies the variable name which stores conditional result.
scope The Scope into which the variable attribute has to be set.

Example

[code lang=”html”]
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="x" uri="http://java.sun.com/jsp/jstl/xml" %>

<html>
<head>
<title> x:if Tags</title>
</head>
<body>

<h2>Fruits Information:</h2>

<c:set var="fruitss">

<fruits>

<fruit>
<name>Grapes</name>
<price>40</price>
</fruit>

<fruit>
<name>Orange</name>
<price>30</price>
</fruit>

<fruit>
<name>Apple</name>
<price>90</price>
</fruit>

</fruits>

</c:set>

<x:parse xml="${fruitss}" var="output"/>

<x:if select="$output/fruits/fruit/price < 100">
Fruits prices are very low
</x:if>

</body>
</html>
[/code]

Details of the Code

  • <c:set var=”fruitss”> tag is used to set the variable name which we want to display in the output.
  • <x:parse xml=”${fruitss}” var=”output”/> tag is used to parse the xml content and the result is been stored in specified variable.
  • <x:if select=”$output/fruits/fruit/price tag is used to test the condition.

Steps for Execution

Before executing the xml programs we should add jar files in eclipse namely:
xalan-2.7.0.jar

  • Save this file as example.jsp in your eclipse IDE.
  • Now select this jsp file, right mouse click and select Run as ->Run on server

Output

When the execution process is completed successfully we will get the following output :
x if tag output

 

Previous Tutorial :  JSTL XML x:forEach Tag :: Next Tutorial : JSTL XML x:set Tag

Filed Under: Java Tagged With: JSTL Tutorials

About Krishna Srinivasan

He is Founder and Chief Editor of JavaBeat. He has more than 8+ years of experience on developing Web applications. He writes about Spring, DOJO, JSF, Hibernate and many other emerging technologies in this blog.

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Follow Us

  • Facebook
  • Pinterest

As a participant in the Amazon Services LLC Associates Program, this site may earn from qualifying purchases. We may also earn commissions on purchases from other retail websites.

JavaBeat

FEATURED TUTORIALS

Answered: Using Java to Convert Int to String

What is new in Java 6.0 Collections API?

The Java 6.0 Compiler API

Copyright © by JavaBeat · All rights reserved