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Samebug tips

  1. ,
    via Stack Overflow by ERJAN

    This exception occurs when using an older version of java. Mainly when trying to run a jar compiled with a newer Java version in an older Java version. We can avoid this issue by executing the jar in the same version which it was compiled.

  2. ,
    Expert tip

    This might be caused by and outdated version of Java, SonarQube now uses Java 8 as default.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.

Solutions on the web

via Jenkins JIRA by Matt Smollinger, 1 year ago
java.lang.UnsupportedClassVersionError: net/hockeyapp/jenkins/releaseNotes/ChangelogReleaseNotes$DescriptorImpl : Unsupported major.minor version 51.0
via Jenkins JIRA by Matt Smollinger, 1 year ago
java.lang.UnsupportedClassVersionError: net/hockeyapp/jenkins/releaseNotes/ChangelogReleaseNotes$DescriptorImpl : Unsupported major.minor version 51.0
via Stack Overflow by Shaun Abram
, 2 years ago
file:/data/trg/tar5/jenkins/plugins/cvs/WEB-INF/classes/META-INF/annotations/hudson.Extension might need to be rebuilt: java.lang.ClassNotFoundException: hudson.scm.CvsModule$DescriptorImpl
via Jenkins JIRA by Markus KARG, 1 year ago
file:/usr/share/tomcat6/.jenkins/plugins/git/WEB-INF/classes/META-INF/annotations/hudson.Extension might need to be rebuilt: java.lang.ClassNotFoundException: hudson.plugins.git.GitSCM$DescriptorImpl
via Jenkins JIRA by Markus KARG, 1 year ago
file:/usr/share/tomcat6/.jenkins/plugins/git/WEB-INF/classes/META-INF/annotations/hudson.Extension might need to be rebuilt: java.lang.ClassNotFoundException: hudson.plugins.git.GitSCM$DescriptorImpl
via Google Groups by rdesgroppes@java.net (JIRA), 2 years ago
file:/home/jenkins/plugins/robot/WEB-INF/classes/META-INF/annotations/hudson.Extension might need to be rebuilt: java.lang.ClassNotFoundException: hudson.plugins.robot.tokens.RobotPassPercentageTokenMacr o
java.lang.UnsupportedClassVersionError: net/hockeyapp/jenkins/releaseNotes/ChangelogReleaseNotes$DescriptorImpl : Unsupported major.minor version 51.0	at java.lang.ClassLoader.defineClass1(Native Method)	at java.lang.ClassLoader.defineClassCond(ClassLoader.java:637)	at java.lang.ClassLoader.defineClass(ClassLoader.java:621)	at jenkins.util.AntClassLoader.defineClassFromData(AntClassLoader.java:1138)	at hudson.ClassicPluginStrategy$AntClassLoader2.defineClassFromData(ClassicPluginStrategy.java:768)	at jenkins.util.AntClassLoader.getClassFromStream(AntClassLoader.java:1309)	at jenkins.util.AntClassLoader.findClassInComponents(AntClassLoader.java:1365)	at jenkins.util.AntClassLoader.findClass(AntClassLoader.java:1325)	at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at jenkins.ClassLoaderReflectionToolkit.invoke(ClassLoaderReflectionToolkit.java:44)	at jenkins.ClassLoaderReflectionToolkit._findClass(ClassLoaderReflectionToolkit.java:86)	at hudson.PluginManager$UberClassLoader.findClass(PluginManager.java:1110)	at java.lang.ClassLoader.loadClass(ClassLoader.java:306)	at java.lang.ClassLoader.loadClass(ClassLoader.java:247)	at net.java.sezpoz.IndexItem.element(IndexItem.java:134)	at hudson.ExtensionFinder$Sezpoz.scout(ExtensionFinder.java:666)	at hudson.ClassicPluginStrategy.findComponents(ClassicPluginStrategy.java:349)	at hudson.ExtensionList.load(ExtensionList.java:300)	at hudson.ExtensionList.ensureLoaded(ExtensionList.java:253)	at hudson.ExtensionList.iterator(ExtensionList.java:143)	at hudson.ClassicPluginStrategy.findComponents(ClassicPluginStrategy.java:348)	at hudson.ExtensionList.load(ExtensionList.java:300)	at hudson.ExtensionList.ensureLoaded(ExtensionList.java:253)	at hudson.ExtensionList.size(ExtensionList.java:162)	at com.sonyericsson.hudson.plugins.gerrit.trigger.PluginImpl.postInitialize(PluginImpl.java:298)	at hudson.PluginManager$2$1$2.run(PluginManager.java:386)	at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:169)	at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:282)	at jenkins.model.Jenkins$7.runTask(Jenkins.java:903)	at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:210)	at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:117)	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)	at java.lang.Thread.run(Thread.java:695)