JSTL - fn:substringBefore() Function

The fn:substringBefore() function returns the part of a string before a specified substring.

Syntax

The fn:substringBefore() function has the following syntax −

java.lang.String substringBefore(java.lang.String, java.lang.String)

Example

Following example explains the functionality of the fn:substringBefore() function −

<%@ 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>Using JSTL Functions</title>
   </head>

   <body>
      <c:set var = "string1" value = "This is first String."/>
      <c:set var = "string2" value = "${fn:substringBefore(string1, 'first')}" />
      <p>Final sub string : ${string2}</p>
   </body>
</html>

You will receive the following result −

Final sub string : This is
jsp_standard_tag_library.htm
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