How to do logging in java using log4j api, best practices and tips

Today we will learn What is Log4j and How to use it
1 What is Log4j
2 How to implement Log4j in Java Project.

What is Log4j
Log4j is a java based logging framework
Is simple, flexible, reliable, and fast
Is configured though a configuration file

Practical Example

Step 1:Add Log4j libraries to the java project
Can add jar files or maven dependency