log4j.propetiesのサンプル
log4j.rootCategory=INFO, STDOUT
# stdout
log4j.appender.STDOUT=org.apache.log4j.ConsoleAppender
log4j.appender.STDOUT.layout=org.apache.log4j.PatternLayout
log4j.appender.STDOUT.layout.ConversionPattern=%d{HH:mm:ss} %-5p %m (%c)%n
