There are missing two % on the web page.
http://logging.apache.org/log4cxx/manual/Introduction.html
log4j.appender.stdout.layout.ConversionPattern=%5p [t] (F:L) - m%n
should be
log4j.appender.stdout.layout.ConversionPattern=%5p [t] (F:L) - %m%n
and
log4j.appender.R.layout.ConversionPattern=%p t c - m%n
should belog4j.appender.R.layout.ConversionPattern=%p t c - %m%n
log4j.rootLogger=debug, stdout, Rlog4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.layout=org.apache.log4j.PatternLayout# Pattern to output the caller's file name and line number. log4j.appender.stdout.layout.ConversionPattern=%5p [t] (F:L) - m%nlog4j.appender.R=org.apache.log4j.RollingFileAppender log4j.appender.R.File=example.loglog4j.appender.R.MaxFileSize=100KB# Keep one backup file log4j.appender.R.MaxBackupIndex=1log4j.appender.R.layout=org.apache.log4j.PatternLayout log4j.appender.R.layout.ConversionPattern=%p t c - m%n
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