What is a Maven artifact

Question

What is an artifact and why does Maven need it

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An artifact is a file  usually a JAR  that gets deployed to a Maven repository   A Maven build produces one or more artifacts  such as a compiled JAR and a  sources  JAR   Each artifact has a group ID  usually a reversed domain name  like com example foo   an artifact ID  just a name   and a version string   The three together uniquely identify the artifact   A project s dependencies are specified as artifacts

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An artifact is a JAR or something that you store in a repository   Maven gets them out and builds your code

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To maven  the build process is arranged as a set of artifacts  Artifacts include    The plugins that make up Maven itself  Dependencies that your code depends on  Anything that your build produces that can  in turn be consumed by something else    Artifacts live in repositories

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In general software terms  an  artifact  is something produced by the software development process  whether it be software related documentation or an executable file   In Maven terminology  the artifact is the resulting output of the maven build  generally a jar or war or other executable file  Artifacts in maven are identified by a coordinate system of groupId  artifactId  and version  Maven uses the groupId  artifactId  and version to identify dependencies  usually other jar files  needed to build and run your code

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Usually  when you create a Java project you want to use functionalities  made in another Java projects  For example  if your project wants to send one email you dont need to create all the necessary code for doing that  You can bring a java library that does the  most part of the work  Maven is a building tool that will help you in several tasks  One of those tasks is to bring  these external dependencies or artifacts to your project in an automatic way   only with some configuration in a XML file    Of course  Maven has more details but  for your question this is enough  And  of course too  Maven can build your project as an artifact  usually a jar file   that can be used or imported in other projects  This website has several articles talking about Maven   https   connected2know com programming what-is-maven  https   connected2know com programming maven-configuration

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Q  What is Artifact in maven  ANS  ARTIFACT is a JAR  WAR or EAR   but it could be also something else  Each artifact has    a group ID  like com your package   an artifact ID  just a name   and  a version string  The three together uniquely identify the artifact    Q Why does Maven need them  Ans  Maven is used to make them available for our applications

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I know this is an ancient thread but I wanted to add a few nuances   There are Maven artifacts  repository manager artifacts and then there are Maven Artifacts   A Maven artifact is just as other commenters responders say  it is a thing that is spat out by building a Maven project   That could be a  jar file  or a  war file  or a  zip file  or a  dll  or what have you   A repository manager artifact is a thing that is  well  managed by a repository manager   A repository manager is basically a highly performant naming service for software executables and libraries   A repository manager doesn t care where its artifacts come from  maybe they came from a Maven build  or a local file  or an Ant build  or a by-hand compilation       A Maven Artifact is a Java class that represents the kind of  name  that gets dereferenced by a repository manager into a repository manager artifact   When used in this sense  an Artifact is just a glorified name made up of such parts as groupId  artifactId  version  scope  classifier and so on   To put it all together    Your Maven project probably depends on several Artifacts by way of its  lt dependency gt  elements  Maven interacts with a repository manager to resolve those Artifacts into files by instructing the repository manager to send it some repository manager artifacts that correspond to the internal Artifacts  Finally  after resolution  Maven builds your project and produces a Maven artifact   You may choose to  turn this into  a repository manager artifact by  in turn  using whatever tool you like  sending it to the repository manager with enough coordinating information that other people can find it when they ask the repository manager for it    Hope that helps

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usually we talking Maven Terminology about Group Id   Artifact Id and Snapshot Version  Group Id identity of the group of the project Artifact Id identity of the project Snapshot version the version used by the project   Artifact is nothing but some resulting file like Jar  War  Ear      simply says Artifacts are nothing but packages

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Maven organizes its build in projects     An artifact in maven is a resource generated by a maven project  Each maven project can have exactly one artifact like a jar  war  ear  etc  The project s configuration file  pom xml  describes how the artifact is build  how unit tests are run  etc  Commonly a software project build with maven consists of many maven-projects that build artifacts  e g  jars  that constitute the product  E g     Root-Project      produces no artifact  simply triggers the build of the other projects   App-Project     The application  that uses the libraries   Lib1-Project    A project that creates a library  jar    Lib2-Project    Another library   Doc-Project     A project that generates the user documentation from some resources   Maven artifacts are not limited to java resources  You can generate whatever resource you need  E g  documentation  project-site  zip-archives  native-libraries  etc     Each maven project has a unique identifier consiting of  groupId  artifactId  version   When a maven project requires resources of another project a dependency is configured in it s pom xml using the above-mentioned identifier  Maven then automatically resolves the dependencies when a build is triggered  The artifacts of the required projects are then loaded either from the local repository  which is a simple directory in your user s home  or from other  remote  repositories specified in you pom xml

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