The method public void trace(String msg) calls the underlying log4j logger with level DEBUG.

The problem is in org.slf4j.impl.Log4jLoggerAdapter line 90.

85 : /**
86 : * Log a message object at level TRACE.
87 : * @param msg - the message object to be logged
88 : */
89 : public void trace(String msg)

{ 90 : logger.log(FQCN, Level.DEBUG, msg, null); 91 : }