The Log4j 2 to SLF4J Adapter allows applications coded to the Log4j 2 API to be routed to SLF4J. Use of this adapter may cause some loss of performance as the Log4j 2 Messages must be formatted before they can be passed to SLF4J. With Log4j 2 as the implementation these would normally be formatted only when they are accessed by a Filter or Appender.
The Log4j 2 to SLF4J adapter is dependent on the Log4j 2 API and the SLF4J API. For more information, see Runtime Dependencies.
Include this jar, the SLF4J jar(s) and an SLF4J logging implementation jar together. Configure the logging implementation as required.