import java.text.DateFormat;
import java.text.NumberFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.Locale;
public class LocalizationTest2 {
    public static void main(String[] args) {
        new LocalizationTest2().run();
    }
    void run() {
        double n=12345.67;

        // language - lowercase two-letter ISO-639 code: 
        // https://en.wikipedia.org/wiki/List_of_ISO_639-1_codes
        // country - uppercase two-letter ISO-3166 code: 
        // http://en.wikipedia.org/wiki/ISO_3166-1_alpha-2

        Locale ln = new Locale("ja","JP");
        NumberFormat nf = NumberFormat.getCurrencyInstance(ln);
        System.out.println("cost, jp, = >"+nf.format(n)+"<");
        //---------------------
        ln = new Locale("ko","KR");
        nf = NumberFormat.getCurrencyInstance(ln);
        System.out.println("cost, ko, = >"+nf.format(n)+"<");
        //---------------------
        ln = new Locale("zh","CN");
        nf = NumberFormat.getCurrencyInstance(ln);
        System.out.println("cost, cn, = >"+nf.format(n)+"<");
        //---------------------
        ln = new Locale("ar","SA");
        nf = NumberFormat.getCurrencyInstance(ln);
        System.out.println("cost, ar, = >"+nf.format(n)+"<");
        //---------------------
        ln = new Locale("sv","SE");
        nf = NumberFormat.getCurrencyInstance(ln);
        System.out.println("cost, se, = >"+nf.format(n)+"<");
        //---------------------
        ln = new Locale("fr","FR");
        nf = NumberFormat.getCurrencyInstance(ln);
        System.out.println("cost, fr, = >"+nf.format(n)+"<");
    }
} // end of class LocalizationTest2

D:\JAVA\java1probe>chcp 1251
Текущая кодовая страница: 1251

D:\JAVA\java1probe>java LocalizationTest2
cost, jp, = >?12,346<
cost, ko, = >?12,346<
cost, cn, = >?12,345.67<
cost, ar, = >?.?.? 12,345.67<
cost, se, = >12 345,67 kr<
cost, fr, = >12 345,67 €<