ADDITIONAL SYSTEM INFORMATION :
Win10
jdk11.0.3


A DESCRIPTION OF THE PROBLEM :
The unicode standard defines a currency grouping separator with de_AT (see https://www.unicode.org/cldr/charts/33/by_type/numbers.symbols.html#Symbols_). It is not possible to use the correct grouping separator when dealing with monetary values. For de_AT the monetary grouping separator is a dot '.', the number grouping separator is a blank ' '.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
    public static void main(String[] args) {
        Double number = 1500D;
        NumberFormat format = NumberFormat.getCurrencyInstance(new Locale("de", "AT"));
        String currency = format.format(number);
        System.out.println("Currency in Austria : Must be '€ 1.500,00' but is '" + currency + "'");
    }

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Methods
- DecimalFormatSymbols.getMonetaryGroupingSeparator()
- DecimalFormatSymbols.setMonetaryGroupingSeparator(char)
must exist.
ACTUAL -
At the moment the unicode standard for Austria cannot be applied correctly.

---------- BEGIN SOURCE ----------
    public static void main(String[] args) {
        Double number = 1500D;
        NumberFormat format = NumberFormat.getCurrencyInstance(new Locale("de", "AT"));
        String currency = format.format(number);
        System.out.println("Currency in Austria : Must be '€ 1.500,00' but is '" + currency + "'");
    }
---------- END SOURCE ----------