3) The last 6 log files must be stored. If t - java help on CodeGym

The requirement is the one above. I don't understand something, where do we change the condition to meet the new requirement "if the sixth file is already full you need to delete the first file and create a new one" . Is this something the program does automatically after we set MaxFileSize to 5MB and MaxBackupIndex to 6 ?

log4j.rootLogger=INFO, file, stdout

# Direct log messages to a log file
log4j.appender.file=org.apache.log4j.RollingFileAppender
log4j.appender.file.threshold=WARN
log4j.appender.file.File=D:\\log\\runApp.log
log4j.appender.file.MaxFileSize=5MB
log4j.appender.file.MaxBackupIndex=6
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern= %-5p %c{1}:%L - %m%n

# Direct log messages to stdout
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.threshold=ERROR
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss}

log4j.logger.org.springframework=ERROR
log4j.logger.org.hibernate=ERROR
log4j.logger.org.apache.cxf=ERROR

3) The last 6 log files must be stored. If the sixth file is already full (i.e. is 5 MB), then you need to delete the first file and create a new one. Where is this condition met?