Well, some good news(well crossing my fingers at least), I ensured that the following jar files in the log4j-1.2.13.jar, log4j-core-2.17.1.jar, log4j-api-2.17.1.jar, and log4j2.properties in the jars folder, which is the CLASSPATH, then when I ran "java -Djdbc.drivers=foo.bar.Driver -Ddbd.port=12345 com.vizdom.dbd.jdbc.Server" It did not error out.