This document provides an overview of Maven including common commands like mvn clean and mvn package, Maven phases and goals, the standard project structure and POM file format. It defines plugins, phases and goals in Maven, describes the Maven build lifecycle with default phases like compile and test, and how to install Maven on Windows, Linux and MacOS.

1. POM
Repositories
Build Life Cycle
Maven vs ANT vs Gradle
Common tasks
mvn clean
mvn package
mvn clean package
mvn clean install
mvn plugin:goal
Standard Project Structure
What is Maven?
Installation
Define Plugin, Phases, Goals
References
Apache Maven

2. Define Plugin, Phases, Goals
http://stackoverflow.com/questions/16205778/what-are-maven-goals-and-phases-
and-what-is-their-difference
Phases executes sequentially. Executing a
phase means executes all previous
dependent phases, life cycles
The clean life cycle has 3 phases (pre-clean, clean, post-clean). mvn clean It will call
pre-clean and clean.
Common tasks
https://eckobar.files.wordpress.com/2007/02/maven-cheatsheet.pdf
mvn clean
cleans up anything that was created by previous builds
mvn package
#This packages your project and creates .jar file under target/ #To Run the jar file
created under target/ java -jar target/dateutils.jar
mvn clean package
cleans up anything that was created by previous builds and Takes the compiled
code and package it in its distributable format, such as a JAR, WAR, or EAR
file.

3. mvn clean install
cleans up anything that was created by previous builds and installs the package
in local / remote maven repository.
mvn archetype:generate
mvn archetype:generate -DgroupId=com.mkyong.core.utils -DartifactId
-DarchetypeArtifactId=maven-archetype-quickstart -DinteractiveMode
Build Life Cycle
https://maven.apache.org/guides/introduction/introduction-to-the-lifecycle.html
clean
cleans up anything that was created by previous builds
default/build
https://maven.apache.org/guides/introduction/introduction-to-the-lifecycle.html
phases
phase is called via Maven command, for example mvn compile, only
phases upto and including that phase will execute.
validate
Validates whether project is correct and all necessary information is available
to complete the build process.

4. compile
Source code compilation is done in this phase.
test
Run tests using a suitable unit testing framework
package
This phase creates the JAR / WAR package as mentioned in packaging in
POM.xml.
Take the compiled code and package it in its distributable format, such as a
JAR, WAR, or EAR file.
verify
Run any check-ups to verify the package is valid and meets quality criterias.
install
This phase installs the package in local / remote maven repository.
deploy
Copies the final package to the remote repository for sharing with other
developers and projects.
site

5. site
https://maven.apache.org/plugins/maven-site-plugin/
Maven Site plugin is generally used to create fresh documentation to
create reports, deploy site etc
site
"mvn site” to generate a documentation site for your project information
mvn site:site will also generate documentation
*The generated site is under your project “target/site” folder.
site-deploy
Deploys the generated site to the site URL specified in the
<distributionManagement> section of the POM. <project> ...
<distributionManagement> <site> <id>website</id>
<url>scp://www.mycompany.com/www/docs/project/</url> </site>
</distributionManagement> ... </project>
Standard Project Structure
https://maven.apache.org/guides/introduction/introduction-to-the-standard-
directory-layout.html
POM
https://maven.apache.org/pom.html
Elements*

6. Elements*
#Sample pom.xml with mandatory elements.
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.javatpoint.application1</groupId>
<artifactId>my-app</artifactId>
<version>1</version>
</project>
project
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
http://maven.apache.org/xsd/maven-4.0.0.xsd">
modelVersion
<modelVersion>4.0.0</modelVersion>
groupId
<groupId>com.javatpoint.application1</groupId>
artifactId
<artifactId>my-app</artifactId>
version
<version>1</version>

7. Scope
Dependency scope is used to limit the transitivity of a dependency,
Super POM
https://maven.apache.org/guides/introduction/introduction-to-the-pom.html
Installation
JDK is pre-requisite verify with java -version
Windows
https://www.mkyong.com/maven/how-to-install-maven-in-windows/
Linux
http://www.baeldung.com/install-maven-on-windows-linux-mac
OSX
https://www.mkyong.com/maven/install-maven-on-mac-osx/