What is it all about?
The Simple Logging Facade for Java (SLF4J) serves as a simple facade or abstraction for various logging frameworks (e.g. java.util.logging, logback, log4j) allowing the end user to plug in the desired logging framework at deployment time.
* Open Source & Easy to use. * SLF4J is only a facade, meaning that it does not provide a complete logging solution. * SLF4J reduces the impact of this dependence to near-painless levels.