java.lang.NoClassDefFoundError

org/apache/log4j/Logg er

Samebug tips9

If you're using Hibernate, this indicates you're missing FasterXML Classmate dependency, which you can add to your dependencies. To add it, the groupId is com.fasterxml and artifactId is Classmate.

NoClassDefFoundError means java has failed to find a class you're trying to instantiate, look if you've added the class you're trying to instantiate to the dependencies.

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Solutions on the web19155

  • org/apache/log4j/Logg er
  • via jmdoudoux.fr by Unknown author, 1 year ago
    org/apache/log4j/Logg er
  • via Coderanch by Khuzema Dharwala, 1 year ago
    org/apache/log4j/Logg er
  • Stack trace

    • java.lang.NoClassDefFoundError: org/apache/log4j/Logg er at log4jtesting.TestLogging.main(TestLogging.java:18) Caused by: java.lang.ClassNotFoundException: org.apache.log4j.Logger at java.net.URLClassLoader$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) ... 1 more

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