This code is extracted from the Android project to allow a clean-room implementation of the popular JSON API to be available under a free license as a small and independent dependency.
The original library  is licensed under a standard BSD license  with an additional line that requires the use of the software only for "non-evil" purposes. Since this is ill-defined, many downstream consumers of this software find this license condition unacceptable. The moral is don't put jokes into legal documents.
Thanks to the Android team for doing 99% of the work.
Thanks also to Simon Lessard for lending his critical eye and excellent suggestions.
Thanks to Tobias Soloschenko and Martin Grigorov with suggestions so open-json can help Wicket avoid the problem.