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

  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.

Solutions on the web

via one-jar by sforge-kumar
, 11 months ago
Bad version number in .class file
via Google Groups by RickHigh, 2 years ago
Bad version number in .class file
via Oracle Community by 802550, 1 year ago
via Oracle Community by 843859, 6 months ago
Bad version number in .class file
via Stack Overflow by alex
, 2 years ago
Bad version number in .class file
via Google Groups by momalxa, 8 months 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:676)	at org.apache.felix.framework.ModuleImpl$ModuleClassLoader.findClass(ModuleImpl.java:1872)	at org.apache.felix.framework.ModuleImpl.findClassOrResourceByDelegation(ModuleImpl.java:758)	at org.apache.felix.framework.ModuleImpl.access$100(ModuleImpl.java:61)	at org.apache.felix.framework.ModuleImpl$ModuleClassLoader.loadClass(ModuleImpl.java:1733)	at java.lang.ClassLoader.loadClass(ClassLoader.java:252)	at org.apache.felix.framework.ModuleImpl.getClassByDelegation(ModuleImpl.java:674)	at org.apache.felix.framework.searchpolicy.R4Wire.getClass(R4Wire.java:108)	at org.apache.felix.framework.ModuleImpl.searchImports(ModuleImpl.java:1440)	at org.apache.felix.framework.ModuleImpl.findClassOrResourceByDelegation(ModuleImpl.java:753)	at org.apache.felix.framework.ModuleImpl.access$100(ModuleImpl.java:61)	at org.apache.felix.framework.ModuleImpl$ModuleClassLoader.loadClass(ModuleImpl.java:1733)	at java.lang.ClassLoader.loadClass(ClassLoader.java:252)	at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:375)	at org.springframework.roo.addon.gwt.GwtMetadataProvider.getProvidesType(GwtMetadataProvider.java:206)	at org.springframework.roo.addon.gwt.GwtMetadataProvider.activate(GwtMetadataProvider.java:194)