New Relic does not distribute the jar(s) required to build this instrumentation module nor are they available from a public repository such as Maven Central or jcenter.
To build this instrumentation module you must provide the jar(s) and place them into the /lib subdirectory as follows:
instrumentation/weblogic-jmx-12.2.1/lib/com.oracle.weblogic.server.jarcom.oracle.weblogic.server - 12.2.1.0 or above