Project Loom Early-Access Builds

These builds are intended for developers looking to "kick the tyres" and provide feedback on using the API or by sending bug reports.

Warning: This build is based on an incomplete version of JDK 20.

Build 20-loom+20-40 (2022/11/3)

These early-access builds are provided under the GNU General Public License, version 2, with the Classpath Exception.

Linux / AArch64 tar.gz (sha256) 196195129
Linux / x64 tar.gz (sha256) 197718937
macOS / AArch64 tar.gz (sha256) 192090481
macOS / x64 tar.gz (sha256) 194439806
Windows / x64 zip (sha256) 196332500




Please send feedback via e-mail to To send e-mail to this address you must first subscribe to the mailing list.


International use restrictions

Due to limited intellectual property protection and enforcement in certain countries, the source code may only be distributed to an authorized list of countries. You will not be able to access the source code if you are downloading from a country that is not on this list. We are continuously reviewing this list for addition of other countries.