log4j.properties (example)

 
# --- SelfDiagnose ---
log4j.logger.com.philemonworks.selfdiagnose=INFO, SELFDIAGNOSE
log4j.appender.SELFDIAGNOSE=org.apache.log4j.ConsoleAppender
log4j.appender.SELFDIAGNOSE.layout=org.apache.log4j.PatternLayout
log4j.appender.SELFDIAGNOSE.layout.ConversionPattern=%d{dd/MM/yyyy HH:mm:ss,SSS} %-5p %c{1} - %m%n