java.lang.NoClassDefFoundError

org/apache/log4j/Level

Samebug tips9

Check if you didn't forget to instantiate your topic in the kafka broker.


rafaelrafael

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.


rafaelrafael

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  • Stack trace

    • java.lang.NoClassDefFoundError: org/apache/log4j/Level at org.slf4j.LoggerFactory.bind(LoggerFactory.java:128) at org.slf4j.LoggerFactory.performInitialization(LoggerFactory.java:108) at org.slf4j.LoggerFactory.getILoggerFactory(LoggerFactory.java:279) at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:252) at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:265) at testlogger.TestLogger.main(TestLogger.java:22) Caused by: java.lang.ClassNotFoundException: org.apache.log4j.Level at java.net.URLClassLoader$1.run(URLClassLoader.java:366) at java.net.URLClassLoader$1.run(URLClassLoader.java:355) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:354) at java.lang.ClassLoader.loadClass(ClassLoader.java:425) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) at java.lang.ClassLoader.loadClass(ClassLoader.java:358) ... 6 more

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