Log4j Tutorial

Log4j is a simple and flexible logging framework.Log4j is an open source logging API for Java.Log4j handles inserting log statements in application code and managing them externally without touching application code,by using external configuration files.It will categorize log statements according to user-specified criteria and assigns different priority levels to these log statements.


log4j - Overview

Log4j is a simple and flexible logging framework.Log4j is an open source logging API for Java.Log4j handles inserting log statements in application code and managing them externally without touching application code,by using external configuration files. more >>


log4j - Architecture

Log4j is comprised of three main components.
Logger
Appender
Layout more >>


Log4j Basic Example

Logger class is used for handling the majority of log operations and getLogger method is used for return a logger according to the value of the parameter. If the logger already exists, then the existing instance will be returned. more >>


Log4j Configuration Using Properties File

In this tutorial you will learn how to configure Log4j using properties file.There are mainly two ways to configure log4j externally.We can easily configure the log4j by using a properties file or xml file. The main benefit of this way is once the log statements are more >>


Log4j File Appenders - LOGGING TO A FILE

There are various type of File appenders are available with log4j library. These include FileAppender which will log the message to a single file, and more advanced file-appenders such as RollingFileAppender.We will discuss about File appenders in this article. more >>


Logging to multiple appenders (OR LOG FILES)

In this tutorial we will discuss how we can have multiple appenders, in other words how we can log the message into more than one appenders like file and console . more >>



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