RFR: 8373515: Migrate "test/jdk/java/net/httpclient/" to null-safe "SimpleSSLContext" methods [v4]

[Volkan Yazici]

On Tue, 6 Jan 2026 06:44:59 GMT, Jaikiran Pai <jpai at openjdk.org> wrote:

>> Volkan Yazici has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains six commits:
>> 
>>  - Merge remote-tracking branch 'upstream/master' into simpleSslHc
>>  - Merge remote-tracking branch 'upstream/master' into simpleSslHc
>>  - Make sure `get()` returns the same instance
>>  - Restore `test/jdk/java/net/httpclient/` changes
>>  - Reverted all changes and only kept `SimpleSSLContext` enhancements
>>  - Overhaul `SimpleSSLContext` and its usages
>
> Thank you for doing this cleanup. Looks simple but is involved because of the number of places this change was required. Apart from one issue to a test change, that I added as a review comment, the rest looks good to me.

Thanks so much for the review @jaikiran.

All `test/jdk/java/net/httpclient/` tests pass on several platforms using b8544bbff7e.

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PR Comment: https://git.openjdk.org/jdk/pull/28771#issuecomment-3714105562