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    This might be caused by and outdated version of Java, SonarQube now uses Java 8 as default.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

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via Coderanch by Migrated From Jforum.net, 1 year ago
This exception has no message.
via Coderanch by Manoj Maniraj, 1 year ago
This exception has no message.
via Eclipse Bugzilla by siddharthgarg1984, 1 year ago
via Eclipse Bugzilla by cap, 1 year ago
This exception has no message.
via Eclipse Bugzilla by kathy, 1 year ago
via https://bugzilla.redhat.com/bugzilla/ by Filip Elias, 1 year ago
java.lang.UnsupportedClassVersionError: Bad version number in .class file	at java.lang.ClassLoader.defineClass1(Native Method)	at java.lang.ClassLoader.defineClass(ClassLoader.java:621)	at java.lang.ClassLoader.defineClass(ClassLoader.java:466)	at hudson.remoting.RemoteClassLoader.loadClassFile(RemoteClassLoader.java:191)	at hudson.remoting.RemoteClassLoader.findClass(RemoteClassLoader.java:144)	at java.lang.ClassLoader.loadClass(ClassLoader.java:307)	at java.lang.ClassLoader.loadClass(ClassLoader.java:252)	at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)	at hudson.os.PosixAPI.jnr(PosixAPI.java:30)	at hudson.util.IOUtils.mode(IOUtils.java:125)	at hudson.util.io.TarArchiver.visit(TarArchiver.java:102)	at hudson.util.DirScanner$Glob.scan(DirScanner.java:133)	at hudson.FilePath.writeToTar(FilePath.java:1979)	at hudson.FilePath.copyRecursiveTo(FilePath.java:1905)	at hudson.FilePath.copyRecursiveTo(FilePath.java:1832)	at hudson.maven.reporters.MavenSiteArchiver.postExecute(MavenSiteArchiver.java:82)	at hudson.maven.Maven3Builder$MavenExecutionListener.recordMojoEnded(Maven3Builder.java:453)	at hudson.maven.Maven3Builder$MavenExecutionListener.mojoSucceeded(Maven3Builder.java:435)	at org.apache.maven.lifecycle.internal.DefaultExecutionEventCatapult.fire(DefaultExecutionEventCatapult.java:87)	at org.apache.maven.lifecycle.internal.DefaultExecutionEventCatapult.fire(DefaultExecutionEventCatapult.java:42)	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:228)	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)	at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)	at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)	at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)	at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)	at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320)	at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)	at org.jvnet.hudson.maven3.launcher.Maven3Launcher.main(Maven3Launcher.java:79)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:592)	at org.codehaus.plexus.classworlds.launcher.Launcher.launchStandard(Launcher.java:329)	at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:239)	at org.jvnet.hudson.maven3.agent.Maven3Main.launch(Maven3Main.java:158)	at hudson.maven.Maven3Builder.call(Maven3Builder.java:100)	at hudson.maven.Maven3Builder.call(Maven3Builder.java:66)	at hudson.remoting.UserRequest.perform(UserRequest.java:118)	at hudson.remoting.UserRequest.perform(UserRequest.java:48)	at hudson.remoting.Request$2.run(Request.java:326)	at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:269)	at java.util.concurrent.FutureTask.run(FutureTask.java:123)	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:651)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:676)	at java.lang.Thread.run(Thread.java:595)