Could not initialize class com.koloboke.collect.map.hash.HashIntObjMaps$DefaultFactoryHolder

[persal]

Using AdoptOpenJDK 11.0.5
First of all, is ver 1.0.0 compatible with JDK 11?

We get a NoClassDefFoundError with below stacktrace:

Caused by: java.lang.NoClassDefFoundError: Could not initialize class com.koloboke.collect.map.hash.HashIntObjMaps$DefaultFactoryHolder
at com.koloboke.collect.map.hash.HashIntObjMaps.getDefaultFactory(HashIntObjMaps.java:55) ~[koloboke-api-jdk8-1.0.0.jar:?]
at com.koloboke.collect.map.hash.HashIntObjMaps.newImmutableMap(HashIntObjMaps.java:1499) ~[koloboke-api-jdk8-1.0.0.jar:?]

Code that breaks:
TreeMap<Integer, DeserializeAction> map = new TreeMap<>();
..do stuff
this.map = HashIntObjMaps.newImmutableMap(map); //this line throws exception

The above code is initiated in a class in its initialization
public class Myclass {
DoStuff stuff = new DoStuff(); // triggers the above call to HashIntObjMaps.newImmutableMap(map);

}

We have following jar files in the classpath:
koloboke-api-jdk8-1.0.0.jar
koloboke-impl-common-jdk8-1.0.0.jar
koloboke-impl-jdk8-1.0.0.jar

We have not been able to reproduce it consequently, but seem to happen from time to time.

[persal]

Understand this project is not actively being developed any more, but for the record the above issue has been solved and has nothing to do with this library but with another library managing the classloading.