This is more complicated than it might seem. You have to allow for the case where you're at the end of the list and there is no next object. I can't think of a way to make this work with <logic:xxx> tags. Even if you figured out a way, you'd end up having to use some scriptlets anyway.
If I were you, I'd just write a scriptlet to handle this. Another possibility would be to write your own custom tag.