Worldwide DST
zones change very often and there’s no central authority coordinating it.
A country, or in some cases even a city, can decide if and how to apply or revoke it.
Everytime it happens, the change is recorded in the IANA Time Zone Database
, and the update will be rolled out in a future release of the JRE.
We can force the modified Time Zone data containing the new DST settings into the JRE through Java Time Zone Updater Tool
,
- Download the latest updater and latest
tzdata
from https://www.iana.org/time-zones - Stop all JRE application.
- Run the following command to update
sudo java -jar ziupdater-1.1.1.1.jar -V -l file:///Users/thirumal/Downloads/tzdata2023c.tar.gz