locale_constructor.java

import java.util.Locale;
import java.text.NumberFormat;
import java.text.DateFormat;
import java.util.Date;
class Main {
 public static void main(String[] args) {
   Locale deLocale = new Locale("de","De");
   Locale usLocale = new Locale("en","US");
   long number = 123456789L;
   NumberFormat denf = NumberFormat.getInstance(deLocale);
   NumberFormat usnf = NumberFormat.getInstance(usLocale);
   System.out.println( denf.format(number) ); 
   System.out.println( usnf.format(number) );
  
   Date now = new Date();
   DateFormat usdf = DateFormat.getDateTimeInstance(DateFormat.LONG, DateFormat.LONG, usLocale);
   DateFormat dedf = DateFormat.getDateTimeInstance(DateFormat.LONG, DateFormat.LONG, deLocale);
   System.out.println( usdf.format(now) );
   System.out.println( dedf.format(now) );
 }
}