Web Reference: It is user-friendly, fast, and flexible. You can use it to log messages at different levels of severity, from debug to fatal, and you can configure it to log messages to various destinations, such as files, databases, or the console. See Getting started for an introduction. Apache log4j is a nice logging library, which is highly configurable and easy to use. This tutorial has been prepared for beginners to help them understand the basic functionality of log4J logging framework. Jan 21, 2026 · In this tutorial, we will go over the basics of logging with Log4j, starting from the configurations, log levels, log rotation, pushing logs with appenders, log formatting, logging in a structured format and more.
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