Java Internationalization - http://java.sun.com/j2se/1.3/docs/guide/intl/index.html Overview from Sun.
JDK 1.1 Internationalization - http://java.sun.com/products/jdk/1.1/docs/guide/intl/index.html Allows the development of localizable applets. Enhancements include the display of UNICODE characters, a locale mechanism, localized message support, locale-sensitive date, time, time zone and number handling, collation services, character set converters, parameter formatting, and support for finding character/word/sentence boundaries.
Java Internationalization and Localization Toolkit 2.0 - http://java.sun.com/products/jilkit/ A toolkit for rapid Java applications internationalization and localization development. It will reduce significantly the cost and time for internationalization and localization development.
Bidi - http://www.alphaworks.ibm.com/aw.nsf/frame?ReadForm&/aw.nsf/techmain/EEEAD864EBEEBD778825671B00653382 Bidi-RichEdit Control for Java is a styled text editor which supports multiple languages, including English, Arabic and Hebrew.