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Editorial Team
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Asked: 2026-05-27T14:45:08+00:00

First of all, please bare my ignorance. This may be a very basic question.

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First of all, please bare my ignorance. This may be a very basic question. But I am not to find it out.

I see some thing like this in the code. I dont understand what a JSTL is. Whatever I search, it redirects to JSTL related articles, which I seldom understand !

${applicationVersionNumber}

What does this mean ? From where this value is read ? Any help is highly appreciated.

Also I see the below on top of my file. Which one of these three lines is actually required for ${applicationVersionNumber} to work ?

<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt"%>
<%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %>
<%@ taglib uri="http://jakarta.apache.org/taglibs/log-1.0" prefix="log"%>
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1 Answer

  1. Editorial Team

    None of the taglib is necessary as it is a JSP 2.0 standard.

    It just print the content of the variable in the document.

    For more details about the EL expressions, this is the documentation you’re looking for: http://java.sun.com/products/jsp/syntax/2.0/syntaxref207.html#1010522

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