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    This might be caused by and outdated version of Java, SonarQube now uses Java 8 as default.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

Solutions on the web

via Coderanch by Migrated From, 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 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(	at java.lang.ClassLoader.defineClass(	at hudson.remoting.RemoteClassLoader.loadClassFile(	at hudson.remoting.RemoteClassLoader.findClass(	at java.lang.ClassLoader.loadClass(	at java.lang.ClassLoader.loadClass(	at java.lang.ClassLoader.loadClassInternal(	at hudson.os.PosixAPI.jnr(	at hudson.util.IOUtils.mode(	at	at hudson.util.DirScanner$Glob.scan(	at hudson.FilePath.writeToTar(	at hudson.FilePath.copyRecursiveTo(	at hudson.FilePath.copyRecursiveTo(	at hudson.maven.reporters.MavenSiteArchiver.postExecute(	at hudson.maven.Maven3Builder$MavenExecutionListener.recordMojoEnded(	at hudson.maven.Maven3Builder$MavenExecutionListener.mojoSucceeded(	at	at	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(	at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(	at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(	at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(	at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(	at org.apache.maven.DefaultMaven.doExecute(	at org.apache.maven.DefaultMaven.execute(	at org.jvnet.hudson.maven3.launcher.Maven3Launcher.main(	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(	at sun.reflect.DelegatingMethodAccessorImpl.invoke(	at java.lang.reflect.Method.invoke(	at org.codehaus.plexus.classworlds.launcher.Launcher.launchStandard(	at org.codehaus.plexus.classworlds.launcher.Launcher.launch(	at org.jvnet.hudson.maven3.agent.Maven3Main.launch(	at	at	at hudson.remoting.UserRequest.perform(	at hudson.remoting.UserRequest.perform(	at hudson.remoting.Request$	at hudson.remoting.InterceptingExecutorService$	at java.util.concurrent.FutureTask$Sync.innerRun(	at	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(	at java.util.concurrent.ThreadPoolExecutor$	at