log4j
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Implementation for Apache Log4J, a highly configurable logging tool that focuses on performance and low garbage generation. It has a plugin architecture that makes it extensible and supports asynchronous logging based on LMAX Disruptor.
Last Release on May 8, 2026
SLF4J LOG4J-12 relocated to slf4j-reload4j
Last Release on May 13, 2026

Relocated → org.slf4j » slf4j-reload4j
API for Apache Log4J, a highly configurable logging tool that focuses on performance and low garbage generation. It has a plugin architecture that makes it extensible and supports asynchronous logging based on LMAX Disruptor.
Last Release on May 8, 2026
The Apache Log4j SLF4J 2.0 API binding to Log4j 2 Core
Last Release on May 8, 2026
The Apache Log4j SLF4J API binding to Log4j 2 Core
Last Release on May 8, 2026

Log4j implemented over SLF4J
Last Release on May 13, 2026
The Apache Log4j 1.x Compatibility API
Last Release on May 8, 2026
The Apache Log4j Commons Logging Adapter
Last Release on May 8, 2026
The Apache Log4j support for web servlet containers
Last Release on May 8, 2026
Legacy version of Log4J logging framework. Log4J 1 has reached its end of life and is no longer officially supported.
Last Release on May 26, 2012