SLF4J allows a Java app to quickly be integrated with most logging frameworks around.
It sits between the app and the logging utility allowing easy interaction and logging of various messages.
Here are some key features of "SLF4J":
Supported logging utilities:
· Log4j (Apache Logging)
· Apache Commons Logging
· JDK 1.5 or higher
What's New in This Release: [ read full changelog ]
· The logger factories in most SLF4J modules namely in jcl-over-slf4j, log4j-over-slf4j, slf4j-jcl, slf4j-jdk14, slf4j-log4j12, and slf4j-simple now use a ConcurrentHashMap instead of a regular HashMap to cache logger instances.