java.lang.NoClassDefFoundError

org/apache/log4j/Logg er

Samebug tips9

A few things cause this exception: 1) Check if you have all jars and if they're in the correct path when running. 2) Your classpath might be broken, you can define it in the command line with "java -cp yourClassPath" or at your IDE if you're using one.

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.

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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 LogSample.<clinit>(LogSample.java:5) Caused by: java.lang.ClassNotFoundException: org.apache.log4j.Logger at java.net.URLClassLoader$1.run(URLClassLoader.java:202) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:247) ... 1 more

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