The Current State of Apache Maven 4 - Development by Karl Heinz Marbaise

While Apache Maven version 4.0.0 is currently in beta stage, there is also a Maven 3.9.X release. In the meantime, I would like to present the different improvements of Apache 4.0.0 with the help of examples. What improvements and customizations have been made so far in Apache Maven 4.0.0 and what are the advantages of the new major release compared to Maven 3.X ? For example, such as consumer vs. build pom. Or the improvement of the reactor behavior, especially for multi-module builds. Simplified usage of versions within multi module projects also other small improvements (WARNINGs vs. ERRORs). Further improvements for plugin configuration etc. Finally what are the potential breaking changes? What can be done to migrate a current Maven 3.X based project to be build with Maven 4.X ?