[tz] Java Installed TZ DB Release Reporting (was: Welcome to the "tz" mailing list)

[Sundar Sarma]

Instead of java.time (System.out.println(java.time.z
one.ZoneRulesProvider.getVersions("UTC").keySet());)) )

I want the above code in joda.time. Could you please help me??
I didn't get ZoneRulesProvider.getVersions in joda.time..


On Fri, 22 May 2020, 23:16 Brian Inglis, <Brian.Inglis at systematicsw.ab.ca>
wrote:

> On 2020-05-22 10:10, Sundar Sarma wrote:
> > we have used this code to get the IANA tz version.
> >
> > public static String getTimezoneDatabaseIANAVersion() {
> >
> >         File readmeFile = new File(ZONEINFO_PATH, "README");
> >         File alternativeReadmeFile = new File(ZONEINFO_PATH,
> "README.txt");
> >
> >         if (!readmeFile.exists()) {
> >             readmeFile = alternativeReadmeFile;
> >         }
> >
> > out read me.txt file contain
> >
> > generated by Gradle
> > Based on
> http://www.iana.org/time-zones/repository/releases/tzdata2020a.tar.gz
> >
> > means we are using correct tzdata2020a.
> >
> > But still why there is issue? Something wrong with tz db??
>
> Just because there is a file present on your system does not mean that the
> TZ DB
> data has been successfully or correctly installed in the JVM you are
> running,
> unless that data is known to be directly used by your JVM as TZ data.
>
> Please consider using the suggested Java statement or command that directly
> queries your JVM:
>
>
> System.out.println(java.time.zone.ZoneRulesProvider.getVersions("UTC").keySet());
>
> *OR*
>
> $ jshell <<<
>
> 'System.out.println(java.time.zone.ZoneRulesProvider.getVersions("UTC").keySet());'
>
> *OR*
>
> $ grep -ao '^...TZDB....[12][90][0-9][0-9][a-z]'
> /usr/lib/jvm/*/lib/tzdb.dat
>
> *OR*
>
> equivalent if you are running other JVMs;
> you also need to follow up with your Java, JVM, workstation or server
> support
> staff to get TZ DB updates successfully and correctly downloaded and
> installed
> in the JVMs you and others are running on a regular basis.
>
> --
> Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada
>
> This email may be disturbing to some readers as it contains
> too much technical detail. Reader discretion is advised.
> [Data in IEC units and prefixes, physical quantities in SI.]
>
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