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International Components for Unicode

ICU4J Time Zone Update Utility (ICUTZU)

Introduction

ICU4J Time Zone Update Utility (ICUTZU) is a utility that supplies ICU4J jar files with the latest time zone information and daylight savings time changeover dates.

The time zone data is stored in zoneinfo.res files which are generated by the ICU team using the Olson Time Zone Database. Every version of the time zone data corresponds directly to a version of the Olson database. For example "2006a" refers to the first refresh of the Olson database in 2006.

ICUTZU works by searching the file system for ICU4J jar files containing old time zone data, checking online for the newest time zone data and updating the ICU4J jar files accordingly. The user can choose to update from a copy of the time zone data that comes bundled with ICUTZU or from an online copy on the ICU servers.

If you would like more information on using ICUTZU, please view the ICUTZU documentation.

Installation

Unpack the archive into a directory of your choosing. For Unix-based systems, you will need to set permissions on runicutzu.sh:

chmod 755 runicutzu.sh

Download

You can download the latest version of ICUTZU from here:

Release Source
Code
Date Major Changes
1.4.0
(2.89 MB)
1.4.0
(34 KB)
2010-03-26 Supported new time zone resource files used by ICU4J 4.4. This version supports the new resource file directory structure on the ICU data repository server. The binary download contains tzdata2010f data (you can still use this version for future updates by accessing the ICU data server via network).
1.3.0
(5.77 MB)
1.3.0
(45 KB)
2009-11-17 Supported updating supplementa data. For tzdata2009p and later tz releases require corresponding updates in supplementalData.res for ICU4J 3.8.1 or later releases.
1.2.0
(5.06 MB)
1.2.0
(43 KB)
2008-07-14 Supported updating metazone mapping data. ICU4J 3.8.1 or later releases contain metazoneInfo.res which should be updated along with zoneinfo.res.
1.1.0
(4.06 MB)
1.1.0
(42 KB)
2007-12-11 Fixed an issue with icu4j 3.8 where update failed due to duplicate jar entries, now removes duplicates.
Also changed much of the way logging and error reporting is handled.
1.0.0
(3.77 MB)
1.0.0
(42 KB)
2007-04-20 Initial release.