java.lang.UnsupportedClassVersionError: Bad version number in .class file         at java.lang.ClassLoader.defineClass2(Native Method)          at java.lang.ClassLoader.defineClass(ClassLoader.java:719)    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:160)                          at java.net.URLClassLoader.defineClass(URLClassLoader.java:254)                                     at java.net.URLClassLoader.access$100(URLClassLoader.java:56) at java.net.URLClassLoader$1.run(URLClassLoader.java:195)    

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Samebug tips

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This might be caused by and outdated version of Java, SonarQube now uses Java 8 as default.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

If you're using intellij plugin of sonarqube, you might have to set the JAVA_HOME ambient variable manually.

Solutions on the web

via jstock by atorrey
, 1 year ago
Bad version number in .class file         at java.lang.ClassLoader.defineClass2(Native Method)          at java.lang.ClassLoader.defineClass(ClassLoader.java:719)    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:160
via Oracle Community by 843810, 1 year ago
com/klg/jprobe/coverage/Coverage (Unsupported major.minor version 48.0)
java.lang.UnsupportedClassVersionError: Bad version number in .class file         at java.lang.ClassLoader.defineClass2(Native Method)          at java.lang.ClassLoader.defineClass(ClassLoader.java:719)    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:160)                          at java.net.URLClassLoader.defineClass(URLClassLoader.java:254)                                     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)

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