JSTL fn:substring() Function

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

Syntax:

The fn:substring () function has following syntax:

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

Example:

Following is the example to explain the functionality of this 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>

This would produce following result:

Final sub string : is first S


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