fn:trim() JSTL Function
fn:trim() JSTL Function Example explains about How To Use fn:trim() JSTL Function.
Consider an example string where you need to remove all the whitespaces in between that string.
In that case, fn:trim() function will removes the white space included in between both ends of a particular string.
java.lang.String trim(java.lang.String)
You can see the below example, which is demonstrating fn:trim() JSTL Function
Required Libraries
fn:trim() Example
<%@ 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>JSTL fn:trim()</title> </head> <body> <% // you can also set the values into request scope same as using c:set // request.setAttribute("str", " This is a Test String "); %> <c:set var="str" value=" This is a TEST String " /> Before trim = ${fn:length(str)}<br/> <c:set var="str" value="${fn:trim(str)}" /> After trim = ${fn:length(str)}<br/> <!--space before "This" and after "String" will be removed--> Now string is = ${str} </body> </html>
Output
Before trim = 24 After trim = 21 Now string is = This is a TEST String