I don't think that has been integrated into FB yet. At least I see nothing in the change list that would indicate that it has been. Also note Andrei's reply in that post: FB works with class files, not source files. So anything like this would have to be part of an IDE plugin, not of FB itself.
My guess would be that none of these tools support that. Keeping Java code in JSP pages is considered seriously bad design; and since the point of these tools is help come up with better code, I doubt that any of them address JSPs.
If you care about code quality, follow their lead, and keep your JSPs free of Java code.
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