A simple log4j properties file template that logs to the console.
### stdout appender ###
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{dd MMM yyyy HH:mm:ss.SSS} [%t] %-5p %c - %m%n
### set root log levels ###
log4j.rootLogger=info, stdout
### show debug level logging for the reference application
log4j.logger.your.package.structure=debug