4.0.0 log4j 1.0-SNAPSHOT log4j com.baeldung parent-modules 1.0.0-SNAPSHOT ../../ log4j log4j ${log4j.version} log4j apache-log4j-extras ${log4j.version} org.apache.logging.log4j log4j-api ${log4j-api.version} org.apache.logging.log4j log4j-core ${log4j-core.version} com.lmax disruptor ${disruptor.version} 1.2.17 2.7 2.7 3.3.6