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Internationalization of Java Platform

Internationalization of Java Platform. Presenter: Ataru Nakazawa Advisor: Xiaoping Jia Date: January 23, 2004. Overview. Introduction Issues Unicode 4.0 Research Design Problem and challenge Work Plan References. Introduction. How many countries are in the world?

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Internationalization of Java Platform

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  1. Internationalization of Java Platform Presenter: Ataru Nakazawa Advisor: Xiaoping Jia Date: January 23, 2004

  2. Overview • Introduction • Issues • Unicode 4.0 • Research Design • Problem and challenge • Work Plan • References

  3. Introduction • How many countries are in the world? • How many languages are in the world? • How many people are in the world?

  4. Answers • How many countries are in the world? 192 countries (U.S. Department of State) • How many languages are in the world? It is difficult to give an exact figure of the number of languages that exist in the world. According to “Ethnologue”, it is usually estimated between 3,000 and 8,000. • How many people are in the world? 6,328,406,644 (U.S census Bureau)

  5. What is Internationalization? • Internationalization is the process of designing an application so that it can be adapted to various languages and regions without engineering changes. • i18n

  6. What is Localization? • Localization is the process of adapting software for a specific region or language by adding locale-specific components and translating text. • l10n • Example l10n Hello (English) Buongiorno (Italian)

  7. Issues(Culturally Dependent Data) • Messages (e.g. English, Italian, Spanish and Japanese) • Dates (e.g. November/14/2003, 14 / 11 /2003) • Times • Numbers • Currencies (e.g. $, £, ¥, ) • Measurements (e.g. length, weight, capacity, temperature) • Phone numbers • Postal addresses • Labels on GUI components

  8. Issues that has been solved • Locale • Formatting Messages • Character Sets and Unicode • Collation • Fonts • Graphical User Interfaces • Input Methods

  9. Issues that has not been solved • Unicode 4.0 Support • Complex Text Enhancement • Character Converter Framework • Input Method Framework My research is going to be the Unicode 4.0 support in Java

  10. Unicode 4.0 support in Java Currently, Unicode standard version 4.0 and Java 2 Standard Edition 1.4.2 are released (As of January 5 , 2004). But the J2SE1.4.2 supports only Unicode 3.0. The Unicode 4.0 is not being supported by the J2SE 1.4.2. Java 1.5 is going to be released in this coming summer of 2004. It is going to support Unicode 3.1 but Unicode 4.0.

  11. Unsupported Unicode Blocks • 47,188 new character assignments were made to the Unicode standard version 4.0 from version 3.0. • 38 unsupported Unicode blocks. http://students.depaul.edu/~anakazaw/se690/UnsupportedUnicodeBlocks.txt

  12. Research Design • The java.lang.Character and java.lang.Character. UnicodeBlock classes need updating to provide access to the new characters and blocks. • The normalization algorithm, used by the Collator object, needs modification so that collation and string comparison are carried out correctly. • The case mapping rules used to perform case mappings between upper and lower case letters need upgrading to handle new characters. • The character encoding converters need modification to support these new characters.

  13. Problem and Challenge • 32 bits character assignments were made since Unicode 4.0. That is why supporting the new Unicode characters that are bigger than 16 bits would be the hardest part.

  14. Work Plan • Design January, February, March • Testing April

  15. References • http://java.sun.com, Java Tutorial, Sun Microsystems, 2004. • http://www.oreilly.com, Java Internationalization, O'Reilly, 2001. • http://www.unicode.org, Unicode Standard Version 4.0, Unicode Inc, 2003. • http://java.sun.com, Java Internationalization Forum.

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