This post helps you understand how to use the <fn:toUpperCase> tag in the JSTL function tags library with code example.

The fn:toUpperCase function converts all the characters of a given string to upper case.

 

JSTL <fn:toUpperCase> Syntax:

${fn.toUpperCase(<string or var>)}

 

JSTL <fn:toUpperCase> Example:

The following code snippet converts all the lower case characters to upper case.

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
	pageEncoding="ISO-8859-1"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn"%>
<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
    <title>fn:toUpperCase Demo</title>
  </head>
  <body>
	<h1>fn:toUpperCase Demo</h1>

	<c:set var="text" value=" codejava.net is great source of information"/>
	Text before conversion:  <c:out value="${text}"/><br/><br/>
	<c:set var="text" value="${fn:toUpperCase(text)}"/>
	Text after conversion:  <c:out value="${text}"/><br/><br/>
  </body>
</html>

 

Output:

JSTL function fn-toUpperCase

 

Other JSTL Function Tags:

contains  |  containsIgnoreCase  |  endsWith |  escapeXml  |  indexOf  |  join  |  length  |  replace  |  split  |  startsWith  |  substring  |  substringAfter  |  substringBefore  |  toLowercase  |  trim


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