Package com.freemindcafe.apache.log4j.sample1

Additivity can turn off the appender chaining. More...

Classes
class	App
class	BarBean
class	FooBean

Detailed Description

Additivity can turn off the appender chaining.

log4j uses a hierarchy of loggers. Log messages are send to all the ancestors's appenders.

Using additivity we can turn off this nature.

TRACE > DEBUG > INFO > WARN > ERROR > FATAL > OFF

For this example the log file is generated with in the package directory.

• FooBeans's appender has been set and it's additivity is false. Hence it's log messages will go in FileLog appender only and not in stdout appender.
• BarBeans's appender has been set and additivity is false. Hence it's log messages will go in FileLog appender only and not in stdout appender.
• App does not have any appender and additivity is by default true. It's messages will go to rootLogger's appenders stdout and FileLog.