[Maven] tutorials

1.Create a Project

$ mvn archetype:generate

$ mvn archetype:generate -Dfilter=org.apache:struts

The displayed list will contain only archetypes with a groupId containing org.apache AND an artifactId containing struts

-B [-DinteractiveMode=false] batch mode

$ mvn -B archetype:generate \
  -DarchetypeGroupId=org.apache.maven.archetypes \
  -DgroupId=com.mycompany.app \
  -DartifactId=my-app

Or

$ mvn archetype:generate \
  -DgroupId=com.mycompany.app \
  -DartifactId=my-app \
  -DarchetypeArtifactId=maven-archetype-quickstart \
  -DinteractiveMode=false

Creating a simple java project

mvn archetype:generate -DarchetypeArtifactId=maven-archetype-quickstart

Maven Webapp Archetype
Creating a webapp

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

2.Frequently used commands

$ mvn compile

compile your application sources

$ mvn package

You can now take a look in the ${basedir}/target directory and you will see the generated JAR file.

$ mvn install

install the artifact you've generated (the JAR file) in your local repository (${user.home}/.m2/repository is the default location).

$ mvn clean

remove the target directory with all the build data before starting so that it is fresh.

$ mvn clean dependency:copy-dependencies package

An interesting thing to note is that phases and goals may be executed in sequence.
This command will clean the project, copy dependencies, and package the project (executing all phases up to package, of course).

$ mvn eclipse:eclipse

Generates the following eclipse configuration files:
.project and .classpath files
.setting/org.eclipse.jdt.core.prefs with project specific compiler settings
various configuration files for WTP (Web Tools Project), if the parameter wtpversion is set to a valid version (WTP configuration is not generated by default)
If this goal is run on a multiproject root, dependencies between modules will be configured as direct project dependencies in Eclipse (unless useProjectReferences is set to false).