slf4j
SLF4J, or the Simple Logging Facade for Java, is a logging API that provides a common interface for various logging frameworks. It is not a logging implementation itself. Instead, it acts as a facade that delegates to a concrete backend at runtime via a binding jar. This decouples application code from the specific logging framework and allows switching implementations without changing source.
To use SLF4J, a binding must be present on the classpath that connects the SLF4J API to
The API provides methods for levels trace, debug, info, warn, and error, and supports parameterized messages
SLF4J was created by Ceki Gülcü and first released in the mid-2000s. It has become the de
Example: Logger logger = LoggerFactory.getLogger(MyClass.class); logger.info("User {} logged in", username);