RFR: 8349000: Performance improvement for Currency.isPastCutoverDate(String) [v3]

[Andrey Turbanov]

On Mon, 3 Feb 2025 18:58:57 GMT, Justin Lu <jlu at openjdk.org> wrote:

>> Please review this PR which improves the performance of cut-over date checking when the user supplies a properties override via the `java.util.currency.data` sys prop. Replacing the `SimpleDateFormat` with a _java.time_ alternative has better performance. It should be noted that this method is only entered when the string `s` is confirmed to adhere to the format: `yyyy-MM-ddTHH:mm:ss`.
>> 
>> An alternative is using `LocalDateTime.of(..)` and extracting the date/time values ourselves from `s` with the known positions which is considerably faster but not as concise.
>
> Justin Lu has updated the pull request incrementally with one additional commit since the last revision:
> 
>   reflect review

Marked as reviewed by aturbanov (Committer).

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PR Review: https://git.openjdk.org/jdk/pull/23374#pullrequestreview-2590758515