How to select the first element of a set with JSTL?

I managed to do it with the next code but there must be an easier way.

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %>


<c:if test="${fn:length(attachments) > 0}">
    <c:forEach var="attachment" items="${attachments}" varStatus="loopCount">
        <c:if test="${loopCount.count eq 1}">
         attachment.id
        </c:if>
    </c:forEach>
</c:if>

You can access individual elements with the array [] operator:

<c:out value="${attachments[0].id}" />

This will work for arrays and lists. It won't work for maps and sets. In that case you must put the key of the element inside the brackets.

Sets have no order, but if you still want to get the first element you can use the following:

<c:forEach var="attachment" items="${attachments}" end="0">
     <c:out value="${attachment.id} />
</c:forEach>

Work for arrays and lists only, not for set.