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Programmatic Configuration with Log4j 2 1. Introduction In this tutorial, we’ll take a look at different ways to programmatically configure Apache Log4j 2. 2. Initial Setup To start using Log4j 2, we merely need to include the log4j-core and log4j-slf4j-impl dependencies in our pom.xml: <dependency> <groupId>org.apache.logging.log4j</groupId> <artifactId>log4j-core</artifactId> <version>2.11.0</version> </dependency> <dependency>… Continue Reading log4j2-programmatic-config

Log4j 2 and Lambda Expressions 1. Overview The Log4j 2 library has added support for Java 8 lambda expressions since version 2.4. These expressions can be used by the Logger interface to enable lazy logging. Let’s see a quick example of how we can make use of this feature. For… Continue Reading log4j-2-lazy-logging

Java Logging with Nested Diagnostic Context (NDC) 1. Overview Nested Diagnostic Context (NDC) is a mechanism to help distinguish interleaved log messages from different sources. NDC does this by providing the ability to add distinctive contextual information to each log entry. In this article, we will explore the use of… Continue Reading java-logging-ndc-log4j

Creating a Custom Log4j2 Appender 1. Introduction In this tutorial, we’ll learn about creating a custom Log4j2 appender. If you’re looking for the introduction to Log4j2, please take a look at this article. Log4j2 ships with a lot of built-in appenders which can be used for various purposes such as logging… Continue Reading log4j2-custom-appender

Intro to Log4j2 – Appenders, Layouts and Filters 1. Overview Logging events is a critical aspect of software development. While there are lots of frameworks available in Java ecosystem, Log4J has been the most popular for decades, due to the flexibility and simplicity it provides. Log4j 2 is a new… Continue Reading log4j2-appenders-layouts-filters