How to fix exception: Failed to instantiate SLF4J LoggerFactory?
java, log4j, slf4j
Solution
You should also include `log4j` library as `slf4j-log4j` is just a static binder.
Problem
I am trying to write a java web crawler for semantic web using jena library. I have build project using Netbeans. I am receiving two errors: Failed to instantiate SLF4J LoggerFactory Reported exception: java.lang.NoClassDefFoundError: org/apache/log4j/Level Could not initialize class com.hp.hpl.jena.rdf.model.impl.ModelCom at org.slf4j.LoggerFactory.bind(LoggerFactory.java:128) I have included `slf4j-api` and `slf4j-log` both libraries.