JSTL - fn:substring() Function

The fn:substring() function returns a subset of a string specified by start and end indices.

Syntax

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

java.lang.String substring(java.lang.String, int, int)

Example

Following example explains the functionality of the fn:substring() 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:substring(string1, 5, 15)}" />

      <p>Final sub string : ${string2}</p>
   </body>
</html>

You will receive the following result −

Final sub string : is first S
jsp_standard_tag_library.htm
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