JSTL fn:subStringBefore() function

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The JSTL fn:subStringBefore() function returns a sub string of the input string before a specified string.

Syntax: 

Strung subStringBefore(String inputString, String specifiedString)

Example:

test.jsp

<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn" %>
 
<html>
	<head>
	 <title>fn:substringBefore JSTL function example</title>
	</head>
	<body>
	  <c:set var="testString" 
                       value="Hello this is a JSTL function example"/>
	  Given String: <br/>
	  <c:out value="${testString}" /><br/><br/>
	  Substring before Hello:<br/>
	  <c:out value="${fn:substringBefore(testString, 'example')}"/>
	</body>
</html>

web.xml

<web-app>
 
  <welcome-file-list>
          <welcome-file>test.jsp</welcome-file>
  </welcome-file-list>	
 
</web-app>

Output:

jsp example 63
 
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