src/java.base/share/classes/sun/util/locale/provider/CollatorProviderImpl.java

*** 73,83 ****
          return LocaleProviderAdapter.toLocaleArray(langtags);
      }
  
      @Override
      public boolean isSupportedLocale(Locale locale) {
!         return LocaleProviderAdapter.isSupportedLocale(locale, type, langtags);
      }
  
      /**
       * Returns a new <code>Collator</code> instance for the specified locale.
       * @param locale the desired locale.
--- 73,83 ----
          return LocaleProviderAdapter.toLocaleArray(langtags);
      }
  
      @Override
      public boolean isSupportedLocale(Locale locale) {
!         return LocaleProviderAdapter.forType(type).isSupportedProviderLocale(locale, langtags);
      }
  
      /**
       * Returns a new <code>Collator</code> instance for the specified locale.
       * @param locale the desired locale.