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https://issues.apache.org/jira/browse/LANG-1786?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18035713#comment-18035713
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Lenny Primak commented on LANG-1786:
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I also would be happy to remove the setter for the global variable and having
it rely on the system property alone (preferred).
OR have the setter fail if called more than once.
> FastDateFormat logs warnings on the console using FastDateFormat on Java 25
> ---------------------------------------------------------------------------
>
> Key: LANG-1786
> URL: https://issues.apache.org/jira/browse/LANG-1786
> Project: Commons Lang
> Issue Type: Improvement
> Components: lang.time.*
> Affects Versions: 3.19.0
> Reporter: Daniel Migowski
> Priority: Major
> Fix For: Patch Needed
>
>
> When using an instance of FastDateFormat with e.g.
> {code:java}
> FastDateFormat.getInstance( "yyyy-MM-dd'T'HH:mm:ssZ" );{code}
> the timezone database of the commons.lang package iterates throught all
> timezones and adds them to the local database. This sadly calls
> {code:java}
> java.util.TimeZone.getTimeZone(String){code}
> with a bunch of timezone strings that are considered deprecated with the new
> JDK25 (or something between 18 and 25, didn't check that), and each of these
> timezone strings leads to a message like
> {noformat}
> WARNING: Use of the three-letter time zone ID "ACT" is deprecated and it will
> be removed in a future release{noformat}
> printed directly from the getTimeZone function to system.err!
> This is actually really annoying. The timezone strings which are deprecated
> can be found in
> {code:java}
> java.time.ZoneId.SHORT_IDS.{code}
> My suggestion is to check in
> {code:java}
> org.apache.commons.lang3.time.FastDateParser.TimeZoneStrategy.TimeZoneStrategy{code}
> if the JDK version 25 is running and then to filter the values from SHORT_IDS
> to be recognized. SHORT_IDS should be copied into commons.lang to make this
> still work with older JDKs.
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