FULL PRODUCT VERSION :
java version "1.8.0_25"
Java(TM) SE Runtime Environment (build 1.8.0_25-b18)
Java HotSpot(TM) Client VM (build 25.25-b02, mixed mode, sharing)

A DESCRIPTION OF THE PROBLEM :
localedata.jar contains sun.util.resources.de.CurrencyNames_de_GR,
which seems to contains currency names in 'German (Greece)'. However, there's no such language, plus the contents of the class aren't actually in German - the entry for GRD are actually greek characters. This leads to the impression that that data isn't actually correct and should be removed.
Note that there is no other locale data for de_GR.

The ugly thing about that bogus data is that de_GR is even returned from java.util.Locale.getAvailableLocales(), which makes no sense at all.

I suggest you remove that bogus sun.util.resources.de.CurrencyNames_de_GR (plus any other locale data I might have missed)


REPRODUCIBILITY :
This bug can be reproduced always.