Regardless of the logging system you use, you can write messages to the log using all of the methods supported in earlier versions of EAServer, such as:
System.out.println or Jaguar.writeLog from Java code running in the server
ErrorLogging.log from PowerBuilder NVO (nonvisual object) components
JagLog from C or C++ components
In addition, if you use Log4j or the Java Logging system, you can log messages from in-server Java code by calling the logging API directly.