RFR: 8343804: Show the default time zone with -XshowSettings option

[Jaikiran Pai]

On Thu, 7 Nov 2024 23:36:39 GMT, Naoto Sato <naoto at openjdk.org> wrote:

> A small enhancement in the Java launcher. For diagnostic purposes, display the default time zone ID with the `-XshowSettings` option.

Hello Naoto, this looks good to me. The test itself could assert that the printed timezone is indeed the default timezone, but if you prefer it in its current form, that's fine too.

-------------

Marked as reviewed by jpai (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/21965#pullrequestreview-2422672395