https://stackoverflow.com/questions/13291578/how-to-localize-an-android-app-in-indonesian-language
Note that Java uses several deprecated two-letter codes. The Hebrew ("he")
language code is rewritten as "iw", Indonesian ("id") as "in", and Yiddish
("yi") as "ji". This rewriting happens even if you construct your own
Locale object, not just for instances returned by the various lookup
methods.
Hans-Christoph Steiner