Why does Locale.getDefault().getLanguage() in Android return the display name instead of the language code?

Question

According to the Java reference, Locale.getLanguage() is supposed to return the 2-letters lowercase ISO code of the language (e.g. en), while get

Answer 1

Use

getResources().getConfiguration().locale.getLanguage()

and it will work just fine even though I would consider your observed behaviour a bug worth reporting..