Displaying/reading multilingual characters

(1) how do you display universal characters in their native character sets? i have a multilingual file containing
chinese, japanese, Korean and english characters (there may be different/more languages). This file is encoded in unicode for development purposes.I need to display these in their proper native glyphs. Problem i encountered was choosing the right font.properties, for e.g. when i use font.properties.ko , korean fonts are display properly but chinese/japanese are not...and when i use font.properties.ja then korean characters are displayed as black boxes.
(2) Given a InputStream containing multi-lingual charactes such as CJK and english, is there a way to find out the locale of the character set. I need this so that numeric information is displayed in the proper local.
i'm using JDK 1.3 on windows 2000 sp2.
any help is greatly appreciated.
thanks

(1) Since the data is already in Unicode, just get a font that can display all unicode characters. Arial Unicode MS is one such font.
(2) Not without some processing.

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Hi,
Product:           Java Web Application
Operating system:     Windows NT/2000 server, Linux, FreeBSD
Web Server:          IIS, Apache etc
Application server:     Tomcat 3.2.4, JRun, WebLogic etc
Database server:     MySQL 3.23.49, MS-SQL, Oracle etc
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