Our own inimitable Ulf Dittmer has written a rootin' tootin' new article entitled (Java)Scripting Java with Rhino in the new edition of the JavaRanch Journal. Y'all got sumpin' ter say, say it here.
Turns out the link to the "printable version" of this article was, indeed, incorrectly pointing to the Ant article. The correct link is this. The page has been updated. Thanks for reporting this!