Dynamically call CSS in a JSP

I have a JSP page which uses some kind of JSTL st开发者_开发百科atment to refer a CSS...

<jstl:tag ...href=abc.css>

Now this same abc.css is located in 3 separate folders and based on some condition it picks dynamically from one of these 3 folders..

I am not sure howitdoes that and wantec to understand if this logic iswritten somewherewithin the JSTL TLD or in some Java class...what can be the possibilities?

Thank you.

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You can use the JSTL c:choose tag for this purpose. For eg:

<c:choose>
<c:when test="some condition">
<link rel="stylesheet" href="path to your css" type="text/css">
<!--If this condition is true use this css-->
</c:when>
<c:when test="some other condition">
<link rel="stylesheet" href="path to your css" type="text/css">
<!--If this condition is true use this css-->
</c:when>
<c:otherwise>
<link rel="stylesheet" href="path to your css" type="text/css">
<!--If none of the conditions are true use this css-->
</c:otherwise>
</c:choose>