Apache Log4j is a versatile, industrial-grade Java logging framework composed of an API, its implementation, and components to assist the deployment for various use cases.

You can manually download all published Log4j distributions, verify them, and see their licensing information by following the instructions in the Download page of Logging Services.

Apache Log4j 2 is an upgrade to Log4j that provides significant improvements over its predecessor, Log4j 1.x, and provides many of the improvements available in Logback while …

What is Log4j composed of? Log4j is essentially composed of a logging API called Log4j API, and its reference implementation called Log4j Core. Log4j also bundles several logging bridges to …

The spring-boot-starter-log4j2 artifact will automatically install Log4j Core, JUL-to-Log4j bridge, and configure them. You don’t need to add any other dependency or configure JUL anymore.

Apache Log4j is a versatile, industrial-grade Java logging framework composed of an API, its implementation, and components to assist the deployment for various use cases.

The table below contains links to the Javadoc API Documentation for the components you are most likely to use directly in code.

GraalVM Reachability Metadata Log4j Core and all extension modules now include embedded GraalVM reachability metadata, enabling seamless generation of native images with GraalVM …

Log4j can be configured to poll for changes to resources (in addition to the configuration file) using the MonitorResources element of the configuration. If a change is detected in any of the …

This page tries to cover the most prominent Log4j API features. Did you know that Log4j provides specialized APIs for Kotlin and Scala? Check out Log4j Kotlin and Log4j Scala projects for …