static {
ResourceBundle rb =
ResourceBundle.getBundle(
"calendar/" + ISO_CALENDAR_TYPE,
Locale.ROOT,
getDefaultLoader(),
UTF8ResourceControl.SINGLETON);
String[] languages = rb.getString("languages").split(" ");
Set<String> tmp = new HashSet<>();
Collections.addAll(tmp, languages);
LANGUAGES = Collections.unmodifiableSet(tmp);
Set<Locale> locs = new HashSet<>();
for (String lang : LANGUAGES) {
locs.add(new Locale(lang));
}
// defensive strategy in case JDK should change its behaviour
for (LanguageMatch lm : LanguageMatch.values()) {
locs.add(new Locale(lm.name())); // in Java 8 or earlier no effect
}
LOCALES = Collections.unmodifiableSet(locs);
}
private static ResourceBundle getBundle(Locale desired) throws MissingResourceException {
if (LANGUAGES.contains(LanguageMatch.getAlias(desired))) {
return ResourceBundle.getBundle(
"calendar/" + ISO_CALENDAR_TYPE,
desired,
getDefaultLoader(),
UTF8ResourceControl.SINGLETON);
}
return null;
}