java.lang.ClassNotFoundException: org.slf4j.LoggerFactory

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

via by Unknown author

This is because SLF4J jar file needs to be added into your application's classpath. In order to fix this issue you have to provide one of the various SLF4J implementation .jar files in the classpath, as well as the interface .jar file.

Expert tip

A few things cause this exception:
1) Check if you have all jars and if they're in the correct path.
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.

Solutions on the web

java.lang.ClassNotFoundException: org.slf4j.LoggerFactory
at java.lang.ClassLoader.loadClass(
at sun.misc.Launcher$AppClassLoader.loadClass(
at java.lang.ClassLoader.loadClass(
at org.jboss.logging.Slf4jLoggerProvider.getLogger(
at org.jboss.logging.LoggerProviders.find(
at org.jboss.logging.LoggerProviders.(
at org.jboss.logging.Logger.getLogger(
at org.jboss.logging.Logger.getMessageLogger(
at org.jboss.logging.Logger.getMessageLogger(
at org.hibernate.validator.internal.util.logging.LoggerFactory.make(
at org.hibernate.validator.internal.util.Version.(
at org.hibernate.validator.internal.engine.ConfigurationImpl.(
at org.hibernate.validator.HibernateValidator.createGenericConfiguration(
at javax.validation.Validation$GenericBootstrapImpl.configure(

Users with the same issue

Once, 1 month ago
Once, 6 months ago
Samebug visitor profile picture
Unknown user
Once, 8 months ago
4 times, 9 months ago
Once, 10 months ago
2506 more bugmates

Know the solutions? Share your knowledge to help other developers to debug faster.