How do I do "nested if" in JSTL for Java JSP?

Question

I want to do something like the following:

<c:choose>
    <c:when test="${empty example1}">
    </c:when>
    <c:otherwise>
        <c:when test="${empty example2}">
        </c:when>
        <c:otherwise>
        </c:otherwise>              
    </c:otherwise>
</c:choose>

Is this even possible? I get an exception thrown when trying to run.

Thank you.

Answer 1

You need to do it more like this:

<c:choose>
    <c:when test="${empty example1}"> 
        <!-- do stuff -->
    </c:when> 
    <c:otherwise> 
        <c:choose>
            <c:when test="${empty example2}"> 
                <!-- do different stuff -->
            </c:when> 
            <c:otherwise> 
                <!-- do default stuff -->
            </c:otherwise>
        </c:choose>
    </c:otherwise> 
</c:choose>

The verbosity shown here is a good example of why XML is a poor language for implementing multi-level conditional statements.