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 project is actively maintained by a team of volunteers and supported by a big community. 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 based...