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  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. ,
    via Google Groups by Marcus Haebler

    Update "latest" to Java 8 on DockerHub.

Solutions on the web

via GitHub by BogdanLivadariu
, 2 years ago
java.lang.UnsupportedClassVersionError: com/github/bogdanlivadariu/jenkins/reporting/rspec/RSpecTestReportPublisher$DescriptorImpl : Unsupported major.minor version 52.0
via GitHub by BogdanLivadariu
, 1 year ago
java.lang.UnsupportedClassVersionError: com/github/bogdanlivadariu/jenkins/reporting/rspec/RSpecTestReportPublisher$DescriptorImpl : Unsupported major.minor version 52.0
via GitHub by ampledata
, 1 year ago
java.lang.UnsupportedClassVersionError: biz/neustar/jenkins/plugins/packer/PackerFileEntry$DescriptorImpl : Unsupported major.minor version 51.0
via Stack Overflow by user3173807
, 2 years ago
java.lang.NoClassDefFoundError: com/thalesgroup/dtkit/metrics/hudson/api/descriptor/TestTypeDescriptor
via github.com by Unknown author, 1 year ago
java.lang.NoClassDefFoundError: com/thalesgroup/dtkit/metrics/hudson/api/descriptor/TestTypeDescriptor
via Stack Overflow by Shaun Abram
, 2 years ago
file:/data/trg/tar5/jenkins/plugins/cvs/WEB-INF/classes/META-INF/annotations/hudson.Extension might need to be rebuilt: java.lang.ClassNotFoundException: hudson.scm.CvsModule$DescriptorImpl
java.lang.UnsupportedClassVersionError: com/github/bogdanlivadariu/jenkins/reporting/rspec/RSpecTestReportPublisher$DescriptorImpl : Unsupported major.minor version 52.0	at java.lang.ClassLoader.defineClass1(Native Method)	at java.lang.ClassLoader.defineClass(ClassLoader.java:800)	at jenkins.util.AntClassLoader.defineClassFromData(AntClassLoader.java:1139)	at hudson.ClassicPluginStrategy$AntClassLoader2.defineClassFromData(ClassicPluginStrategy.java:801)	at jenkins.util.AntClassLoader.getClassFromStream(AntClassLoader.java:1310)	at jenkins.util.AntClassLoader.findClassInComponents(AntClassLoader.java:1366)	at jenkins.util.AntClassLoader.findClass(AntClassLoader.java:1326)	at sun.reflect.GeneratedMethodAccessor49.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:606)	at jenkins.ClassLoaderReflectionToolkit.invoke(ClassLoaderReflectionToolkit.java:44)	at jenkins.ClassLoaderReflectionToolkit._findClass(ClassLoaderReflectionToolkit.java:86)	at hudson.PluginManager$UberClassLoader.findClass(PluginManager.java:1185)	at java.lang.ClassLoader.loadClass(ClassLoader.java:425)	at java.lang.ClassLoader.loadClass(ClassLoader.java:358)	at net.java.sezpoz.IndexItem.element(IndexItem.java:134)	at hudson.ExtensionFinder$Sezpoz.scout(ExtensionFinder.java:666)	at hudson.ClassicPluginStrategy.findComponents(ClassicPluginStrategy.java:382)	at hudson.ExtensionList.load(ExtensionList.java:349)	at hudson.ExtensionList.ensureLoaded(ExtensionList.java:287)	at hudson.ExtensionList.iterator(ExtensionList.java:156)	at hudson.ClassicPluginStrategy.findComponents(ClassicPluginStrategy.java:381)	at hudson.ExtensionList.load(ExtensionList.java:349)	at hudson.ExtensionList.ensureLoaded(ExtensionList.java:287)	at hudson.ExtensionList.getComponents(ExtensionList.java:167)	at hudson.DescriptorExtensionList.load(DescriptorExtensionList.java:185)	at hudson.ExtensionList.ensureLoaded(ExtensionList.java:287)	at hudson.ExtensionList.iterator(ExtensionList.java:156)	at hudson.ExtensionList.get(ExtensionList.java:147)	at com.cloudbees.jenkins.GitHubPushTrigger$DescriptorImpl.get(GitHubPushTrigger.java:320)	at org.jenkinsci.plugins.github.migration.Migrator.migrate(Migrator.java:41)	at org.jenkinsci.plugins.github.GitHubPlugin.postInitialize(GitHubPlugin.java:39)	at hudson.PluginManager$2$1$2.run(PluginManager.java:403)	at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:169)	at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:282)	at jenkins.model.Jenkins$8.runTask(Jenkins.java:913)	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.runWorker(ThreadPoolExecutor.java:1145)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)	at java.lang.Thread.run(Thread.java:745)