RFR: 2317: Avoid use of deprecated Thread.getId()

[Pavel Rappo]

On Fri, 5 Jul 2024 10:07:11 GMT, Pavel Rappo <prappo at openjdk.org> wrote:

> `Thread.getId()` was deprecated in JDK 19, as part of [JDK-8284161]. Skara build now produces warnings because of that method:
> 
>     Task :bot:compileTestJava
>     Note: skara/bot/src/test/java/org/openjdk/skara/bot/BotTaskAggregationHandlerTests.java uses or overrides a deprecated API.
> 
> [JDK-8284161]: https://bugs.openjdk.org/browse/JDK-8284161

I should've made it clear that while `Thread.getId()` was deprecated in JDK 19, as part of [JDK-8284161] as preview, the deprecation was standardised in JDK 21, as part of [JDK-8304919].

[JDK-8284161]: https://bugs.openjdk.org/browse/JDK-8284161
[JDK-8304919]: https://bugs.openjdk.org/browse/JDK-8304919

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PR Comment: https://git.openjdk.org/skara/pull/1669#issuecomment-2210637032