1. SLF4J official address http://www.slf4j.org/
2. The Simple Logging Facade for Java (SLF4J) serves as a simple facade or abstraction for various logging frameworks (eg java.util.logging, logback, log4j) allowing the end user to plug in the desired logging framework at deployment time. Simple The logging facade acts as a simple abstraction for various logging frameworks. Allows end users to plug them in at deployment time.
- slf4j-api-1.7.7.jar
- slf4j-simple-1.7.7.jar