As described in The Client Software Development Kits for C++ and Java with regards to the Client SDK for Java, the underlying client libraries, and the beans themselves, log information pertaining to their operation.

Authors of Java clients need not bother with the standard logging unless they want to modify its operating parameters. By default the SDK classes will log at WARN level. The log level can be changed as described in the Javadoc for the com.apama.util.Logger class.

The Javadoc also provides instructions on how to get a reference to the Logger object in your own code so that you can produce your own logging output.