RFR: 8332161: Test restoring echo in the Console implementation (java.base) [v9]

[Joe Wang]

On Wed, 5 Jun 2024 17:48:25 GMT, Naoto Sato <naoto at openjdk.org> wrote:

>> This test intends to verify the behavior of JdkConsole for the java.base module, wrt restoring the echo. The test assumes the internal methods that sets/gets the echo status of the platform.
>
> Naoto Sato has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Removed unnecessary add-opens

Marked as reviewed by joehw (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/19315#pullrequestreview-2100486648