Maven Examples

This page shows some useful commands of Maven tool

Maven Phases

Here are the list of Phases in the maven lifecycle

validate compile test package integration-test verify install deploy

other phases are

clean site

Most of the phases have many steps or processes within., example: package

1. validate
2. generate-sources
3. process-sources
4. generate-resources
5. process-resources
6. compile

Maven Archetypes

Here are some of the useful commands of Archetypes

:Generate

The following command will create a Maven project com.my.app:my-first-app:1.0-SNAPSHOT application using the Generate maven goal., archetype:generate

mvn archetype:generate -DgroupId=com.my.app -DartifactId=my-first-app -DarchetypeArtifactId=maven-archetype-quickstart -DarchetypeVersion=1.4 -DinteractiveMode=false
or
mvn -B archetype:generate -DgroupId=com.my.app -DartifactId=my-first-app -DarchetypeArtifactId=maven-archetype-quickstart -DarchetypeVersion=1.4 -DinteractiveMode=false

the following command will create a maven project that is a site for the project

mvn archetype:generate \
  -DgroupId=com.my.app \
  -DartifactId=my-first-app-site \
  -DarchetypeGroupId=org.apache.maven.archetypes \
  -DarchetypeArtifactId=maven-archetype-site \
  -DinteractiveMode=false

the following command will create a maven web project

mvn archetype:generate \
    -DgroupId=com.my.app \
    -DartifactId=my-webapp \
    -DarchetypeGroupId=org.apache.maven.archetypes \
    -DarchetypeArtifactId=maven-archetype-webapp \
    -DinteractiveMode=false

Maven Goals and Phases can be invoked in a sequence together

Here is an example to clean the project, copy the dependencies and package the project

mvn clean dependency:copy-dependencies package

maven package

The following command will create the jar file into the target folder

mvn package

execute the generated package

The following command will execute the jar file

java -cp target/my-first-app-1.0-SNAPSHOT.jar com.my.app.App

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POM details

Here we will see some of the details of the POM.xml file

Here are the list of tag elements used within POM

project this is the top level element in all pom.xml files

modelVersion this indicates what version of the object model this POM is using.

groupId this indicates the unique identifier of the org/group that created this project.

artifactId this indicates the unique base name of the primary artifact being generated by this project.

version this indicates the version of the artifact generated by the project

name this indicates the display name used for the project

url this indicates where the project’s site can be found

properties this element contains value placeholders accessible within the POM

dependencies this element’s childern list all the dependencies used by this project

build this element handles things like declaring your project’s directory structure and managing plugins

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