[SonarQube] Error during initialization: NoClassDefFoundError in RulesRegistrant

[Colin]

Hey there.

Does this post help?

java.lang.NoClassDefFoundError: org/sonarsource/analyzer/commons/RuleMetadataLoader

Hi, Using the class directly from the sonar-java plugin is not possible due to the isolated classloaders utilized by the plugins, as explained in the SonarQube docs. Plugins are loaded in isolated classloaders. It means a plugin can’t access another plugin’s classes. There is an exception for package names following pattern org.sonar.plugins.<pluginKey>.api . For example, all classes in a plugin with the key myplugin that are located in org.sonar.plugins.myplugin.api are visible to other pl…