Maven accomplishes this by embracing the idea of Convention over Configuration, that is, Maven provides default values for the project's configuration. However, that is already enough for building the project and running the unit tests associated with the project. This POM only defines a unique identifier for the project ( coordinates) and its dependency on the JUnit framework. Maven projects are configured using a Project Object Model (POM), which is stored in a pom.xml-file. The first beta of Maven 3 saw the introduction of a parallel build feature which leverages a configurable number of cores on a multi-core machine and is especially suited for large multi-module projects. For most projects, upgrading to Maven 3 will not require any adjustments of their project structure. Special attention was given to ensuring backward compatibility of Maven 3 to Maven 2. Languages suggested include Ruby (already in private prototype by Jason van Zyl), YAML, and Groovy. This has expanded the possibility for Maven 3.0 add-ons to leverage non-XML based project definition files. Maven 3.0 has reworked the core Project Builder infrastructure resulting in the POM's file-based representation being decoupled from its in-memory object representation. After eight alpha releases, the first beta version of Maven 3.0 was released in April 2010. Maven 3.0 information began trickling out in 2008. Maven 3.0 was released in October 2010 being mostly backwards compatible with Maven 2. Maven 2 was declared v2.0 in October 2005 after about six months in beta cycles. In July 2004, Maven's release was the critical first milestone, v1.0. In 2003, it was voted on and accepted as a top level Apache Software Foundation project. Maven, created by Jason van Zyl, began as a sub-project of Apache Turbine in 2002. The number of artifacts on Maven's central repository has grown rapidly Īpache Maven has support for reproducible builds. ![]() With Apache Ivy, a dedicated dependency manager was developed as well that also supports Maven repositories. Īlternative technologies like Gradle and sbt as build tools do not rely on XML, but keep the key concepts Maven introduced. A C/ C++ native plugin is maintained for Maven 2. Maven is built using a plugin-based architecture that allows it to make use of any application controllable through standard input. This local cache of downloaded artifacts can also be updated with artifacts created by local projects. ![]() Maven dynamically downloads Java libraries and Maven plug-ins from one or more repositories such as the Maven 2 Central Repository, and stores them in a local cache. It comes with pre-defined targets for performing certain well-defined tasks such as compilation of code and its packaging. An XML file describes the software project being built, its dependencies on other external modules and components, the build order, directories, and required plug-ins. Unlike earlier tools like Apache Ant, it uses conventions for the build procedure. Maven addresses two aspects of building software: how software is built and its dependencies. The Maven project is hosted by the Apache Software Foundation, where it was formerly part of the Jakarta Project. Maven can also be used to build and manage projects written in C#, Ruby, Scala, and other languages. Maven is a build automation tool used primarily for Java projects.
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