Dinesh on Java

Categories: JSTL

JSTL Core <c:set> Tag

JSTL Set tag is used to create new variable and assign a value to new or existing variable.

The <c:set> tag is JSTL-friendly version of the setProperty action. The tag is helpful because it evaluates an expression and uses the results to set a value of a JavaBean or a java.util.Map object.

JSTL Set Tag Example,

<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<html>
<head>
<title><c:set> Tag Example</title>
</head>
<body>
<c:set var="salary" scope="session" value="${50000*2}"/>
<c:out value="${salary}"/>
</body>
</html>

As you can see above, in the set tag, new variable “salary” is created and value is set to 100000. In the next line, it prints the valued of salary variable using out tag.
This would produce following result:

100000

Attribute:
The <c:set> tag has following attributes:

Attribute	Description	Required	Default
value	Information to save	No	body
target	Name of the variable whose property should be modified	No	None
property	Property to modify	No	None
var	Name of the variable to store information	No	None
scope	Scope of variable to store information	No	Page

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Dinesh Rajput

Dinesh Rajput is the chief editor of a website Dineshonjava, a technical blog dedicated to the Spring and Java technologies. It has a series of articles related to Java technologies. Dinesh has been a Spring enthusiast since 2008 and is a Pivotal Certified Spring Professional, an author of a book Spring 5 Design Pattern, and a blogger. He has more than 10 years of experience with different aspects of Spring and Java design and development. His core expertise lies in the latest version of Spring Framework, Spring Boot, Spring Security, creating REST APIs, Microservice Architecture, Reactive Pattern, Spring AOP, Design Patterns, Struts, Hibernate, Web Services, Spring Batch, Cassandra, MongoDB, and Web Application Design and Architecture. He is currently working as a technology manager at a leading product and web development company. He worked as a developer and tech lead at the Bennett, Coleman & Co. Ltd and was the first developer in his previous company, Paytm. Dinesh is passionate about the latest Java technologies and loves to write technical blogs related to it. He is a very active member of the Java and Spring community on different forums. When it comes to the Spring Framework and Java, Dinesh tops the list!