Four Japanese locales, which support different character encodings, are available in the current Oracle Solaris environment. The ja and ja_JP.eucJP locales are based on the Japanese EUC. The ja_JP.eucJP locale conforms to the UI-OSF Japanese Environment Implementation Agreement Version 1.1 and the ja locale conforms to the traditional specification from earlier Oracle Solaris releases. The ja_JP.PCK locale is based on PC-Kanji code (known as Shift_JIS) and the ja_JP.UTF-8 is based on UTF-8.
See the eucJP(5) man page for a map showing Japanese EUC and the character set. See the PCK(5) man page for the map showing PC-Kanji code and the character set.