>What about taking the source of a LinkedQueue and adding a constructor with
>a parameter specifying the behavior for insert(Object) and extract()
>methods? Those seems to be the only methods working with the first/last
>linked nodes. License is "public domain", we can add this code to our source
>tree (and remove the dependency on concurrent.jar too).
>
>

Yes. I have already downloaded the source for LinkedQueue and am in the
process of modifying/rewriting it.

Steve