Java example source code file (tz_update.xml)
The tz_update.xml Java example source code
<?xml version="1.0" encoding="ISO-8859-1"?>
<document>
<properties>
<title>Java date and time API - Time zone update
<author>Stephen Colebourne
</properties>
<body>
<section name="Time zone updates">
<p>
Time zones are a concept driven by the political situation in each country around the world.
As such, they change frequently, and often at short notice.
In order to manage this, Joda-Time uses the internationally recognised
<a href="http://www.iana.org/time-zones">tz database, which is also used
in most operating systems and the JDK itself.
</p>
<p>
Using JDK time zone data is a problem however, as the zones are only updated when the
JDK is updated. This can cause issues if you are locked into an older version of the JDK.
</p>
<p>
Joda-Time also compiles the time zone data into our jar file. However, the key difference is
that you can update the raw data and recompile the jar at any time.
</p>
</section>
<section name="Updating the time zone data">
<p>
Firstly, download the latest version of the data files from
<a href="http://www.iana.org/time-zones">tz database.
Ensure you select the "Data" download which comes as a tar.gz.
</p>
<p>
Secondly, you need a <a href="download.html">source code download of Joda-Time.
</p>
<p>
Thirdly, you must take the time zone data files from step one, and replace those in the Joda-Time download.
They are located at <code>{root}/src/main/java/org/joda/time/tz/src.
Note that only <i>some of the files need to be copied across.
</p>
<p>
Fourthly, change the version number in the pom.xml file to indicate that it is a non-standard release.
</p>
<p>
Finally, recompile the Joda-Time jar file using maven.
Simply type <code>mvn package in the root directory.
</p>
</section>
</body>
</document>
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