JSTL - fn:length() Function
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The fn:length() function returns the string length or the number of items in a collection.
Syntax
The fn:length() function has the following syntax −
int length(java.lang.Object)
Example
Following example explains the functionality of the fn:length() function −
<%@ taglib uri = "https://java.sun.com/jsp/jstl/core" prefix = "c" %> <%@ taglib uri = "https://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."/> <c:set var = "string2" value = "This is second String." /> <p>Length of String (1) : ${fn:length(string1)}</p> <p>Length of String (2) : ${fn:length(string2)}</p> </body> </html>
You will receive the following result −
Length of String (1) : 21 Length of String (2) : 22
jsp_standard_tag_library.htm
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