Question

Basically I have a custom tag that handles querying a java object for me.

<c:set var="profit">
    <ct:get-profit transaction="${transaction}"/>
</c:set>

Now the problem is that I want to use that value (which is a float in an if statement, which I do as so:

 <c:when test="${profit > 0}">

When I do that though I end up getting the following error.

javax.el.ELException: Cannot convert -141.75 of type class java.lang.String to class       java.lang.Long

I have no idea how I can make this work. I was under the impression that JSTL’s would handle casting for you, is that incorrect? Either way, how would you go about making this work? Thanks

Answer 1

Can you try doing 0.00 instead of 0? <c:when test="${profit > 0.00}"> .

The reason you have to it is because 0 is getting treated as Long by the EL parser. However, “0.00” is getting treated as a float.