org.apache apache 4 4.0.0 commons-logging commons-logging Apache Commons Logging 0.0.0-EMPTY jar Version 0.0-EMPTY, is as the name indicates does not offer any content nor provide any java classes. The aim is to fulfill the dependency on commons-logging in a Maven project wihout actually importing commons-logging classes. Including commong-logging version 0.0.0-EMPTY is an indirect way to exclude commons-logging from your project. Based on original idea by Erik van Oosten http://day-to-day-stuff.blogspot.com/2007/07/no-more-commons-logging.html http://day-to-day-stuff.blogspot.com/2007/10/announcement-version-99-does-not-exist.html http://commons.apache.org/logging JIRA http://issues.apache.org/jira/browse/LOGGING scm:svn:http://svn.apache.org/repos/asf/commons/proper/logging/trunk scm:svn:https://svn.apache.org/repos/asf/commons/proper/logging/trunk http://svn.apache.org/repos/asf/commons/proper/logging/trunk org.apache.maven.plugins maven-jar-plugin true true