RFR: 8317742: ISO Starndard Date Format implementation consistency on DateTimeFormatter and String.format

Mon Oct 9 19:56:57 UTC 2023

On Tue, 3 Oct 2023 21:37:46 GMT, 温绍锦 <duke at openjdk.org> wrote:

> j.u.Formatter now prints "%tF" (iso standard date) and the result is incorrect when processing year < 0 or year > 9999

This PR will need an evaluation of the compatibility risk of changing the behavior, describing existing uses and scope and how they might be affected by the change.

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PR Comment: https://git.openjdk.org/jdk/pull/16033#issuecomment-1753645657