I just wanted to point out that Code Recommenders, and with it Jayes, is in the Juno release train! (see http://www.eclipse.org/org/press-release/20120627_junorelease.php) How sweet is that? Code i wrote as my Bachelor's thesis is now at Eclipse :-)
The Code Recommenders feature is distributed as part of the "Eclipse IDE for Java Developers" Download at Eclipse, thus my code now lives on thousands of developer machines :-D