log4j-core

library2.26.0javamavenunverified

The Apache Log4j Implementation.

<dependency>
  <groupId>org.apache.logging.log4j</groupId>
  <artifactId>log4j-core</artifactId>
  <version>2.26.0</version>
</dependency>

github ↗homepage ↗docs ↗

INSTALL

IMPORT

SIG · LOG4J-CORE

log4j-core

loggingjavav2.26.0

harness data pending

Install & Compatibility

Where this runs

No compatibility data collected yet for this library.

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

LogManager

✓ org.apache.logging.log4j.LogManager

Shows how to obtain a Logger and log an info message.

import org.apache.logging.log4j.LogManager; import org.apache.logging.log4j.Logger; public class Example { private static final Logger logger = LogManager.getLogger(Example.class); public static void main(String[] args) { logger.info("Hello, Log4j!"); } }

Debug

Known issues

breakingLog4j 2.x has known security vulnerabilities (e.g., CVE-2021-44228) in older versions.

fix

Upgrade to version 2.17.0 or later to mitigate Log4Shell.

affects: <2.17.0

Upgrade

Version history

2.26.0latest on Maven

Audit

Dependencies

No dependency data recorded yet.

Agent activity

14 hits · last 30 days

node

OpenAI (training)

Resources

githubhttps://github.com/apache/logging-log4j2 ↗

homepagehttps://logging.apache.org/log4j/3.x/ ↗

docshttps://appdoc.app/artifact/org.apache.logging.log4j/log4j-core/ ↗