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. Log4j is used by 8% of the Maven ecosystem and listed as one of the top 100 critical open source software projects. The project is actively maintained by a team of several volunteers and supported by a big community.

Features

  • Log4j bundles a rich set of components to assist various use cases
  • Appenders targeting files, network sockets, databases, SMTP servers, etc.
  • Layouts that can render CSV, HTML, JSON, Syslog, etc. formatted outputs
  • Filters that can be configured using log event rates, regular expressions, scripts, time, etc.
  • Lookups for accessing system properties, environment variables, log event fields, etc.
  • Documentation available
  • Examples available

Project Samples

Apache Log4j Screenshot 1

Project Activity

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Categories

Libraries

License

Apache License V2.0

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Additional Project Details

Programming Language

Java

Related Categories

Java Libraries

Registered

2024-05-20
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