JSP Database Connection JSP Standard Tag Library (JSTL)

JSTL fn:join() function

The fn:join() function joins all elements of an array into a string using a specified separator.

Syntax

The syntax of fn:join() function is as follows:

${fn:join([array], <delimiter>)}

Example Demonstration

The following example demonstrates the function's functionality:

<%@ page language="java" contentType="text/html; charset=UTF-8"
　　　　pageEncoding="UTF-8"
<%@ 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="www w3codebox com/>
<c:set var="string2"value="${fn:split(string1,　'　'}"　/>
<c:set var="string3"value="${fn:join(string2,　'-}"　/>
<p>The string is: ${string3}<//p>
</body>
</html>

Note:The fn:split function returns an array of substrings split by a specified delimiter.

The running result is as follows:

The string is: www-w3codebox-com

JSP Standard Tag Library

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JSTL fn:join() function

Syntax

Example Demonstration