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Categories: JSTL

JSTL Set Locale Example <fmt:setLocale>

In this tutorial you will learn about how to use the JSTL fmt tag setLocale in JSP.

JSTL Set Locale Tag is used to change the locale configuration. SetLocal tag takes ISO Language Code and ISO Country Code as a value. By default it is set to en_US.

setLocale tag sets the specified locale provided in its attribute ‘value‘. This tag keeps the specified locale in the configuration variable of locale.

Attributes of <fmt:setLocale>:

value : This is a required attribute and used for specifying a locale. To specify a locale code it must have made from the two-letter (lower case) language code (according to ISO-639) and/or the two-letter (upper-case) of country code (according to the ISO-3166). And if both the language and country code are used for specifying the locale the locale code must be separated by either hyphen (-) or underscore (_).
variant : This attribute is used for specifying the browser or vendor specific variant.
scope : This attribute specifies the scope of locale configuration variable.

Example :

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>JSTL fmt:bundle Tag</title>
</head>
<body>
<!-- Setting Locale to US -->
    <fmt:setLocale value="en_US"/>
    <fmt:formatNumber value="0.452" type="CURRENCY" minFractionDigits="3"></fmt:formatNumber>
    <br/>
    <!-- Setting Locale to UK -->
    <fmt:setLocale value="en_GB"/>
    <fmt:formatNumber value="0.452" type="CURRENCY" minFractionDigits="3"></fmt:formatNumber>
  <br/>
  <!-- Setting Locale to India -->
    <fmt:setLocale value="en_IN"/>
    <fmt:formatNumber value="0.452" type="CURRENCY" minFractionDigits="3"></fmt:formatNumber>
<br/>
<fmt:setLocale value="en"/>
<fmt:bundle basename="myapp">
<fmt:message key="Name"/><br/>
<fmt:message key="Address"/><br/>
<fmt:message key="Number"/><br/>
</fmt:bundle>
</body>
</html>

As you can see above, currency symbols is displayed based on setting of locale variable.

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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!