Support for Java 11

[lumeche]

I observed that the spring-statemachine-kryo library has a dependency for kryo-shaded 4.0.2 which is not compatible with Java 11. Actually, the entire library is developed for JDK 8. When I tried to use it in Java 11, it didn't work. More precisely with the following exception
Unable to make field private jdk.internal.ref.Cleaner jdk.internal.ref.Cleaner.next accessible: module java.base does not "opens jdk.internal.ref" to unnamed module

Any plans to upgrade the library so it's fully supported by Java 11?

[lumeche]

I created pull request #1062 where I solved my problem. Thanks for reviewing

[lumeche]

Is this project still alive? I'm afraid there is nobody maintaining any more

[winne42]

have the same question, how alive is this project? I am happy that there were was still activity with the 4.0.0 release etc., but since then Spring has received many updates and statemachine is always dragging behind (e.g., cybersecurity vulnerabilities in dependencies etc.).
Are there any other significant contributors than @jvalkeal ? How could we get the project going at least in the sense that small PRs are merged and dependencies are kept up-to-date?

[winfriedgerlach]

@lumeche regarding the liveliness of the project, see last comment on #1161 by @fmbenhassine