Release notes from JavaCAN

Release 3.5.2

2026-01-20T22:33:48Z

This release is functionally identical to 3.5.1, but now correctly targets JDK 1.8 instead of 25.

Release 3.5.1

2026-01-20T20:50:19Z

This is a maintenance release with lots of changes around the gradle build and how deployments work.

One significant bug fix is included in this release: The EPollSelector selector can now be closed repeatedly without causing issues.

WARNING: This release was accidentally compiled for Java 25. A fix for this is in progress.

Release 3.5.0

2024-07-04T16:11:54Z

This release has no functional changes, so if you are not building your own binaries from source, you will not have to update to this release.

If you are building your own JavaCAN binaries, than this release changes everything! JavaCAN finally migrated from Maven to Gradle. Additionally the compile-native.sh script has been replaced by CMake.

The readme has been updated accordingly, but please open issues if the documentation is unclear or not up to date!

This first iteration still has some more caching opportunities left to improve incremental build performance and configuration caching cannot be used in certain situations due to plugin incompatibility. These things will improve in the future, however feel free to open pull requests if you have improvements in mind.

The core-test and epoll-test modules have been merged into core and epoll respectively. The build makes use of Gradle's text-fixture concept, which allows code reuse between tests of the modules. These fixtures are explicitly not currently being published to maven central, please open an issue if demand exists.

javacan-3.5.0-alpha

2024-07-03T19:02:04Z

No content.

javacan-3.5.0-SNAPSHOT

2024-07-03T19:03:38Z

No content.

Release 3.4.0

2024-05-11T01:05:24Z

This release brings a bunch of new functionality!

Major points:

Support for J1939 sockets, thanks @JohnLussmyer for kickstarting this!
Support for message headers for RAW sockets.
Support for android architectures.

Additionally the usual amount of updates and minor fixes.

Release 3.3.2

2024-01-02T13:06:02Z

This is a re-release of 3.3.1 due to release issues.

Release 3.3.1

2023-12-28T22:49:05Z

The release has a bunch of bug fixes:

Set the ISOTP frame_txtime to real zero for the isotp listener test. The default changed with kernel 5.15.34 and made the test very slow.
Correctly construct CAN FD frames when setting the FD_FLAG_FD_FRAME flag but not providing more than 8 bytes of data
Correct strict-mode in the setup-vcan.sh script so it properly created the vcan device
Correctly configure the surefire plugin to use JUnit 5 instead of 4, so tests can be run with maven again
Use logback's 1.3.x version that is still compatible with Java 8 instead of the 1.4.x version
Only build the *-arch-detect modules when using the all-architectures profile, since they don't make sense without that
Restart the epoll_wait syscall on EINTR

Additionally 3.3.1 can now also be built with docker and not just with podman.

Caution: Technically this release contains a small API breakage: IsotpOptions.withFrameTransmissionType has been renamed to IsotpOptions.withFrameTransmissionTime. Given that no bug reports for this exist, I assume that nobody actually used this method and it is save to rename it.

Release 3.3.0

2024-01-02T03:00:22Z

The release re-introduces architecture detection similar to JavaCAN 2.x, however the auto detection is separated into dedicated maven modules. Check the README.md for details.

Release 3.2.5

2023-12-01T23:13:10Z

The release contains just dependency (most importantly slf4j) upgrades and minor code cleanups.