No Japanese locale on a machine with Japanese OS

Question

I am running a small test application on a Windows box with a Japanese version of XP running on it. The default locale correctly displays as Japanese (Locale.getDefault()). However, when I say Locale.getAvailableLocales() and display the results in a combo box, Japanese is not one of the available locales.
In addition, when I try to format a date, with something like:
Calendar c.setTime(new Date(System.currentTimeMillis()));
DateFormat df = DateFormat.getDateTimeInstance(DateFormat.DEFAULT, DateFormat.DEFAULT, Locale.getDefault());
String str += df.format(c.getTime());
the date is still in English.
How is it possible to be running on a Japanese OS and not have Japanese be one of the available locales in Java?
Thanks very much.

Answer 1

From Sun's locale support page (http://java.sun.com/j2se/1.5.0/docs/guide/intl/locale.doc.html):
"Sun's J2SE Runtime Environment 5.0 for Windows may be installed as a complete international version or as a European languages version. The JRE installer by default installs a European languages version if it recognizes that the host operating system only supports European languages. If the installer recognizes that any other language is needed, or if the user requests support for non-European languages in a customized installation, a complete international version is installed. "
and
"The European languages version of the J2SE Runtime Environment 5.0 supports all locales for the following languages: Albanian, Belorussian, Bulgarian, Catalan, Croatian, Czech, Danish, Dutch, English, Estonian, Finnish, French, German, Greek, Hungarian, Icelandic, Italian, Latvian, Lithuanian, Macedonian, Norwegian, Polish, Portuguese, Romanian, Russian, Slovak, Slovenian, Spanish, Swedish, Turkish, Ukrainian."
You might have the European languages version if you didn't use a default method of installing it on that Japanese system (which should have given you the full international version).