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  1. JDK
  2. JDK-8043554

JEP 252: Use CLDR Locale Data by Default

    Details

    • Author:
      Naoto Sato
    • JEP Type:
      Feature
    • Exposure:
      Open
    • Subcomponent:
    • Scope:
      SE
    • Discussion:
      i18n dash dev at openjdk dot java dot net
    • Effort:
      M
    • Duration:
      M
    • Alert Status:
       Green
    • JEP Number:
      252

      Description

      Summary

      Use locale data from the Unicode Consortium's Common Locale Data Repository (CLDR) by default.

      Motivation

      The Unicode Consortium's Common Locale Data Repository is the de-facto standard for locale data on many platforms. Although CLDR locale data is bundled with the JRE as of JDK 8, it is not enabled by default. To turn it on, the end user must explicitly set the system property java.locale.providers, e.g.:

      java.locale.providers=JRE,CLDR

      By enabling the use of CLDR data by default, de-facto standard locale data will be provided to users without any further action on their part.

      Description

      Insert CLDR at the front of the default implicit LocaleProviderAdapter preference list.

      The default lookup order will be CLDR, COMPAT, SPI, where COMPAT designates the JRE's locale data in JDK 9. If a particular provider cannot offer the requested locale data, the search will proceed to the next provider in order. Localized patterns for the formatting and translation of display strings, such as the locale name, may be different in some locales. To enable behavior compatible with JDK 8, set the system property java.locale.providers to a value with COMPAT ahead of CLDR.

      Testing

      Locale-sensitive services such as date, time, and number formatting may behave differently for locales not supported in JDK 8. Existing tests and applications will need to be modified.

      Risks and Assumptions

      We cannot be responsible for the validity of the data coming from CLDR; we assume that it is "good data".

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              • Assignee:
                naoto Naoto Sato
                Reporter:
                naoto Naoto Sato
                Owner:
                Naoto Sato
                Reviewed By:
                Brian Goetz
                Endorsed By:
                Brian Goetz
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