How to fix exception: Failed to instantiate SLF4J LoggerFactory?

Question

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:

1. Failed to insta

Answer 1

You should include slf4j-api-x.x.x.jar and slf4j-simple-x.x.x.jar in your classpath.