JSTL - fn:startsWith() Function

The fn:startsWith() function determines if an input string starts with a specified substring.

Syntax

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

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

Example

Following example explains the functionality of the fn:startsWith() 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 = "string" value = "Second: This is first String."/>
      
      <c:if test = "${fn:startsWith(string, 'First')}">
         <p>String starts with First</p>
      </c:if>
      
      <br />
      <c:if test = "${fn:startsWith(string, 'Second')}">
         <p>String starts with Second</p>
      </c:if>
   
   </body>
</html>

You will receive the following result −

String starts with Second
jsp_standard_tag_library.htm
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