Hi All,

For anyone interested in experimenting with the proposed java.util.json API 
design, I've created a backport that works with JDK 21:

https://github.com/simbo1905/java.util.json.Java21

This is derived from the OpenJDK sandbox commit d22dc2ba (mid-July 2025). The 
backport:

- Works with JDK 21
- Focuses on API compatibility rather than performance
- Uses double-checked locking instead of StableValue
- Runs the JSON Test Suite

The repository includes examples showing the API in use with records, streams, 
and type conversions.

Regards,

Simon

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