# SLF4J 1.7.25 API

SLF4J packages
Package | Description
--- | ---
org.slf4j | Core logging interfaces.
org.slf4j.event |
org.slf4j.helpers | Helper classes.
org.slf4j.impl | Implementations of core logging interfaces defined in the `org.slf4j` package.
org.slf4j.osgi.logservice.impl |
org.slf4j.spi | Classes and interfaces which are internal to SLF4J.

SLF4J extensions
Package | Description
--- | ---
org.slf4j.agent | "-javaagent" routines for SLF4J.
org.slf4j.cal10n | SLF4J API extensions
org.slf4j.ext | Localized logging using the CAL10N API.
org.slf4j.instrumentation | Java instrumentation routines for SLF4J.
org.slf4j.profiler | Poor man's profiler API

Jakarta Commons Logging packages
Package | Description
--- | ---
org.apache.commons.logging | Jakarta Commons Logging implemented over SLF4J.
org.apache.commons.logging.impl | SLF4J based implementation of commons-logging wrapper APIs.

java.util.logging (JUL) to SLF4J bridge
Package | Description
--- | ---
org.slf4j.bridge | Bridge/route all JUL log records to the SLF4J API.

Apache log4j
Package | Description
--- | ---
org.apache.log4j | An rather minimal but sufficient implementation redirecting all calls to a log4j logger to a logback logger.
org.apache.log4j.helpers |
org.apache.log4j.spi |
org.apache.log4j.xml |

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