Virtual threads in JDK 19 EA builds

Pedro Lamarão pedro.lamarao at
Fri May 13 13:47:50 UTC 2022

Thanks for this notice! Yesterday I checked the "release notes" on the
early access build page and it did not include this information. I assumed
Loom had not yet been integrated.

Em sex., 13 de mai. de 2022 às 06:19, Ron Pressler <ron.pressler at>

> Hi.
> Last weekend we integrated JEP 425 (virtual threads preview) [1] into the
> mainline JDK.
> Starting with JDK 19 build 22, available now, the Early Access builds of
> JDK 19 over at
> include virtual threads.
> The incubator module containing StructuredTaskScope (structured
> concurrency) and extent locals has
> not yet been integrated, and so these features are not available in JDK 19
> EA.
> Now would be a good time to start experimenting with virtual threads and
> report any issues you find
> (to this mailing list, or directly to JBS if you have an account) prior to
> JDK 19’s GA release in September.
> This would help us improve virtual threads in JDK 19.
> Please give it a try:
> — Ron
> [1]:

Pedro Lamarão
Securing Critical Systems
Tel: +55 11 4380-6585

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