java.lang.UnsupportedClassVersionError: org/openpnp/Main : Unsupported major.minor version 52.0

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Update "latest" to Java 8 on DockerHub.


You're using an older version of java with classes compiled for java7


This might be caused by and outdated version of Java, SonarQube now uses Java 8 as default. You might upgrade java or use an older version of SonarQube.


If you're using intellij plugin of sonarqube, you might have to set the JAVA_HOME ambient variable manually.

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    • java.lang.UnsupportedClassVersionError: org/openpnp/Main : Unsupported major.minor version 52.0 at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass( at at at$100( at$ at$ at Method) at at java.lang.ClassLoader.loadClass( at sun.misc.Launcher$AppClassLoader.loadClass( at java.lang.ClassLoader.loadClass( at com.exe4j.runtime.LauncherEngine.launch( at com.install4j.runtime.launcher.UnixLauncher.main(

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