How to check whether an input string contains a specified substring ignoring the case using JSP?

The fn:containsIgnoreCase() function determines whether an input string contains a specified substring. While doing search it ignores the case.


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

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


Following is the example to explain the functionality of the fn:containsIgnoreCase() 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 = "${fn:containsIgnoreCase(theString, 'test')}">
         <p>Found test string<p>
      <c:if test = "${fn:containsIgnoreCase(theString, 'TEST')}">
         <p>Found TEST string<p>

You will receive the following result −

Found test string
Found TEST string

Updated on: 30-Jul-2019


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