How to check if an input string contains a specified substring in JSP?

The fn:contains() function determines whether an input string contains a specified substring.


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

boolean contains(java.lang.String, java.lang.String)


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

<%@ taglib uri = "" prefix = "c" %>
<%@ taglib uri = "" prefix = "fn" %>
      <title>Using JSTL Functions</title>
      <c:set var = "theString" value = "I am a test String"/>
      <c:if test = "${fn:contains(theString, 'test')}">
         <p>Found test string<p>
      <c:if test = "${fn:contains(theString, 'TEST')}">
         <p>Found TEST string<p>

You will receive the following result −

Found test string

Samual Sam
Samual Sam

Learning faster. Every day.

Updated on: 30-Jul-2019

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