maven-archetype-quickstart is an archetype which contains a sample Maven project:
project |-- pom.xml `-- src |-- main | `-- java | `-- App.java `-- test `-- java `-- AppTest.java
To create a new project from this archetype, type:
mvn archetype:generate -DarchetypeGroupId=org.apache.maven.archetypes -DarchetypeArtifactId=maven-archetype-quickstart -DarchetypeVersion=5-SNAPSHOT