org.slf4j slf4j-parent 1.7.16 4.0.0 jcl-over-slf4j jar JCL 1.1.1 implemented over SLF4J JCL 1.1.1 implemented over SLF4J http://www.slf4j.org org.slf4j slf4j-api org.slf4j slf4j-jdk14 test