Appenders in Log4j?

Appender:

Appender Object is responsible for storing(printing) the logging messages to a different destinations.

Ex:- Files, console and database.

If you are willing to add Appender object inside your program then you can use following method.

public void addAppender(Appender appender);

The addAppender(Appender appender) method adds an Appender to the Logger object. It is possible to add many Appender objects to a logger in a comma-seperated list, each printing logging information to seperate destinations.

•         Logger classes generates some statements under different levels right, this Appender takes these log statements and stores in some files or database.

•         Appender is an interface. It is implemented by some predefined classes.

We have so many Appender interface classes are..

•         FileAppender                   (writing into a file )

•         ConsoleAppender          (Writing into console )

•      JDBCAppender                (For Databases )

•         JMSAppender

•         RollingFileAppender

•         SocketAppender