java.lang.NoClassDefFoundError

com/google/common/base/Preconditions

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

Don't give up yet. Our experts can help. Paste your full stack trace to get a solution.

Stack trace

  • java.lang.NoClassDefFoundError: com/google/common/base/Preconditions at org.apache.hadoop.conf.Configuration$DeprecationDelta.<init>(Configuration.java:314) at org.apache.hadoop.conf.Configuration$DeprecationDelta.<init>(Configuration.java:327) at org.apache.hadoop.conf.Configuration.<clinit>(Configuration.java:409) at AverageNosClass.main(AverageNosClass.java:71) Caused by: java.lang.ClassNotFoundException: com.google.common.base.Preconditions 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) ... 4 more

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