JSTL - fn:trim() Function

The fn:trim() function removes white space from both ends of a string.

Syntax

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

java.lang.String trim(java.lang.String)

Example

Following example explains the functionality of the fn:trim() 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"/>
      <p>String (1) Length : ${fn:length(string1)}</p>

      <c:set var = "string2" value = "${fn:trim(string1)}" />
      <p>String (2) Length : ${fn:length(string2)}</p>
      <p>Final string : ${string2}</p>

   </body>
</html>

You will receive the following result −

String (1) Length : 29
String (2) Length : 20
Final string : This is first String
jsp_standard_tag_library.htm
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