RFR: 8373538: Migrate all tests to null-safe "SimpleSSLContext" methods [v3]

[Daniel Jeliński]

On Wed, 7 Jan 2026 09:07:26 GMT, Volkan Yazici <vyazici at openjdk.org> wrote:

>> 1. [JDK-8372661] introduced null-safe static factory methods to `SimpleSSLContext`
>> 2. [JDK-8373515] migrated `test/jdk/java/net/httpclient/` to these new methods
>> 3. [JDK-8373537] migrated `test/jdk/com/sun/net/httpserver/` to these new methods
>> 4. This PR migrates all remaining `SimpleSSLContext` usages, *and* removes nullable `SimpleSSLContext` factory methods
>> 
>> [JDK-8372661]: https://bugs.openjdk.org/browse/JDK-8372661
>> [JDK-8373515]: https://bugs.openjdk.org/browse/JDK-8373515
>> [JDK-8373537]: https://bugs.openjdk.org/browse/JDK-8373537
>
> Volkan Yazici has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains nine commits:
> 
>  - Update copyright years
>  - Migrate forgotten `ClearTextServerSSL`
>  - Merge remote-tracking branch 'upstream/master' into simpleSslRest
>  - Remove wildcard imports
>  - Merge remote-tracking branch 'upstream/master' into simpleSslRest
>  - Restore all non-`httpclient`, non-`httpserver` changes in `test/`
>  - Make sure `get()` returns the same instance
>  - Reverted all changes and only kept `SimpleSSLContext` enhancements
>  - Overhaul `SimpleSSLContext` and its usages

Marked as reviewed by djelinski (Reviewer).

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

PR Review: https://git.openjdk.org/jdk/pull/28905#pullrequestreview-3633955099