java.lang.UnsupportedClassVersionError: Bad version number in .class file

Searched on Google with the first line of a JAVA stack trace?

We can recommend more relevant solutions and speed up debugging when you paste your entire stack trace with the exception message. Try a sample exception.

Recommended solutions based on your search

Samebug tips

,
via Google Groups by Marcus Haebler

Update "latest" to Java 8 on DockerHub.

,
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This might be caused by and outdated version of Java, SonarQube now uses Java 8 as default.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 Sébastien Heurtematte, 1 year ago
Bad version number in .class file
via Jenkins JIRA by Sébastien Heurtematte, 1 year ago
Bad version number in .class file
via gotoanswer.com by Unknown author, 2 years ago
via Stack Overflow by TyC
, 2 years ago
Bad version number in .class file
via Stack Overflow by alex
, 2 years ago
Bad version number in .class file
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.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
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 java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:242)
at org.apache.tools.ant.util.ClasspathUtils.newInstance(ClasspathUtils.java:266)
at org.apache.tools.ant.Main.addBuildListeners(Main.java:799)
at org.apache.tools.ant.Main.runBuild(Main.java:681)
at org.apache.tools.ant.launch.Launcher.run(Launcher.java:257)

Users with the same issue

Samebug visitor profile picture
Unknown user
Once, 2 years ago
Samebug visitor profile picture
Unknown user
Once, 2 years ago
Samebug visitor profile picture
Unknown user
Once, 2 years ago
Samebug visitor profile picture
Unknown user
2 times, 1 year ago
Samebug visitor profile picture
Unknown user
Once, 1 year ago
341 more bugmates

Know the solutions? Share your knowledge to help other developers to debug faster.