| Interface | Description | 
|---|---|
| ILoggerFactory | ILoggerFactoryinstances manufactureLoggerinstances by name. | 
| IMarkerFactory | Implementations of this interface are used to manufacture  Markerinstances. | 
| Logger | The org.slf4j.Logger interface is the main user entry point of SLF4J API. | 
| Marker | Markers are named objects used to enrich log statements. | 
| Class | Description | 
|---|---|
| LoggerFactory | The  LoggerFactoryis a utility class producing Loggers for
 various logging APIs, most notably for log4j, logback and JDK 1.4 logging. | 
| MarkerFactory | MarkerFactory is a utility class producing  Markerinstances as
 appropriate for the logging system currently in use. | 
| MDC | This class hides and serves as a substitute for the underlying logging
 system's MDC implementation. | 
| MDC.MDCCloseable | An adapter to remove the key when done. |