How to get TimeZone.getDisplayName(locale) value to return non-English text?

Question

The code below outputs "Japan Standard Time".

TimeZone tz = TimeZone.getTimeZone("Asia/Tokyo");
Locale locale = new Locale("ja_JP");
System.out.println(tz.getDisplayName(locale));

I am expecting it to output something with Kanji along the lines of "日本標準時". It does not seem to matter what timezone ID or locale I pass to getDisplayName()--the resulting text is always English. How do I get the localized values?

I am using Sun Java SDK/JRE version 1.6.0_18. I also tried running the tzupdater utility but got no change in results.

Answer 1

It works if you use the predefined JAPAN locale:

System.out.println(tz.getDisplayName(Locale.JAPAN));

At least, it print a bunch of questions marks on my console, rather than "Japan Standard Time", which has to be a good sign.

Locale.JAPAN is defined as new Locale("ja_JP_", "ja", "JP"), so there's clearly some subtlety here in the constructor arguments.