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 15.

Build 15-loom+4-55 (2020/2/22)

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

Linux / x64 tar.gz (sha256) 198581670

macOS / x64 tar.gz (sha256) 193054288

Windows / x64 zip (sha256) 198503592

Linux / x64	tar.gz (sha256)	198581670
macOS / x64	tar.gz (sha256)	193054288
Windows / x64	zip (sha256)	198503592

Documentation

API Javadoc

Notes

There is ongoing work in the API/library implementations so that blocking operations can be used in the context of fibers. Locking operations with the java.util.concurrent APIs should be okay, as should most of the networking I/O APIs (see Networking+IO).
The networking I/O implementation on Microsoft Windows is not yet scalable to thousands of connections at this time. In addition, Socket.connect methods may appear to "hang" when the connection cannot be established. The implementation on Microsoft Windows will be replaced in time to address these issues.
If you have difficulty downloading any of these files please contact jdk-ea-download-help_ww@oracle.com.

Feedback

Please send feedback via e-mail to loom-dev@openjdk.java.net. To send e-mail to this address you must first subscribe to the mailing list.

Disclaimers

Early-access (EA) functionality might never make it into a general-availability (GA) release.
EA functionality might be changed or removed at any time.
The existence of EA builds does not imply that the functionality being tested will be present in any particular GA release.
The platforms supported and the packaging options available for a GA build might be different than those available for EA builds.
EA builds are not tested to the same level to which Oracle tests GA builds. EA builds are produced for the purpose of gathering feedback. Use for any other purpose is at your own risk.
EA builds might be missing security-vulnerability fixes that are available in GA builds or in other OpenJDK projects.
Oracle does not provide support for EA builds.

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.