# Java 21+ and enabling Virtual Threads - Still experimental?

**URL:** <https://community.temporal.io/t/java-21-and-enabling-virtual-threads-still-experimental/18737>\
**Category:** Community Support\
**Tags:** java-sdk, general-impl\
**Created:** [December 8, 2025, 8:51pm UTC](https://community.temporal.io/t/java-21-and-enabling-virtual-threads-still-experimental/18737 "2025-12-08T20:51:05Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![stryder](https://avatars.discourse-cdn.com/v4/letter/s/f07891/32.png) [@stryder](https://community.temporal.io/u/stryder)\
**Post date:** [December 8, 2025, 8:51pm UTC](https://community.temporal.io/t/java-21-and-enabling-virtual-threads-still-experimental/18737/1 "2025-12-08T20:51:05Z")

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Hi,

Java 21+ Virtual thread Support was announced as public preview / experimental for release 1.27.0 (see [Release v1.27.0 · temporalio/sdk-java · GitHub](https://github.com/temporalio/sdk-java/releases/tag/v1.27.0) )  
I was wondering if it is still considered experimental in more recent releases and if not, a timeline or planned release version where virtual threads usage could be considered production-ready ?

Thank you !

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**Author:** ![tihomir](https://sea2.discourse-cdn.com/flex016/user_avatar/community.temporal.io/tihomir/32/6580_2.png) [@tihomir](https://community.temporal.io/u/tihomir)\
**Post date:** [December 23, 2025, 5:09pm UTC](https://community.temporal.io/t/java-21-and-enabling-virtual-threads-still-experimental/18737/2 "2025-12-23T17:09:04Z")

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> a timeline or planned release version where virtual threads usage could be considered production-ready ?

There is no concrete timeline as of now, will set alert to update when there is one available but also follow sdk releases.

> I was wondering if it is still considered experimental

Yes, but there hasnt been to my knowledge any issues found that would be reason to not use this feature now.