Log4j Tutorial

Log4j:

Log4j is a simple, flexible and fast java based logging framework. It is thread safe and supports internationalization.

Log4j main components:

1. Logger: It is used to log the messages.
2. Appender: It is used to publish the logging information to the destination like file, database, console etc.
3. Layout: It is used to format logging information in different styles.

Advantages of Log4j:

It provides the easy maintenance and fast debugging.

Disadvantages of Log4j:

It slow down the application.

Java log4j tutorial :

• Log4j Logger class
• Java Log4j example
• Log4j example using log4j properties file
• Log4j example using log4j xml file
• Logging levels in log4j
• Log4j file appender
• Log4j multiple appenders

Log4j interview questions:

• Log4j Interview Questions and Answers.