Return date/time not consistent since sapmachine-11.0.17 onward

[catinthesky]

We observed that when with below code:

Calendar calendar = Calendar.getInstance();
// set date to 1st Jan 1900
calendar.set(1900, 0, 1);
//SMALL_DATE = new Date(DateUtils.startOfTheDay(calendar.getTime()).getTime());
SMALL_DATE = new Date(startOfTheDay(calendar.getTime()).getTime());
 ((Date) SMALL_DATE.clone()).getTime())

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((Date) SMALL_DATE.clone()).getTime()) this will return different value since sapmachine-11.0.17 compared with sapmachine-11.0.16, if the VM timezone set to be like: "Time zone: Europe/Amsterdam (CEST, +0200)"

[MBaesken]

There might be some related changes in tzdata2022b .
Please see http://mm.icann.org/pipermail/tz-announce/2022-August/000071.html ; this would correspond to 11.0.17 and mentions changes to previous timestamps.

Regarding your snippet not sure where startOfTheDay would come from.

[RealCLanger]

This item has been open for quite a long time without activity. Please let us know if the issue still exists. In that case, please provide more detail how the output was with 11.0.16 and how it is now after 11.0.17. Also, is the new output present in the latest JDK versions as well? In any case, we probably don't have specifics in SapMachine and can only report the issue to OpenJDK. Generally it is advisable to check in the OpenJDK bug system for reportings of that problem. For now, I'm closing this issue.