Maven notebook

Quick topics

Maven is a standard tool used for building and managing any Java-based project.

Maven buils projects using what's called project object model (POM) an XML file that contains information about the project and configuration details used by Maven to build the project. When executing a task or goal, Maven looks for the POM in the current directory. It reads the POM, gets the needed configuration information, then executes the goal.

Maven provides guidelines for best practices development, in one of the most importants topics, tests. Maven keeps tests code in separate from source code, use test naming conventions to find tests and having test cases setup environment.

Install Maven

You must have Java installed in order to proceed.

Download

Ubuntu 20.04

sudo apt get install maven 

Next command should print installed Maven version

mvn -v

Maven home: /usr/share/maven
Java version: 1.8.0_312, vendor: Private Build, runtime: /usr/lib/jvm/java-8-openjdk-amd64/jre
Default locale: es_ES, platform encoding: UTF-8
OS name: "linux", version: "5.4.0-96-generic", arch: "amd64", family: "unix"

Create a project

• Quick topics
  • Archetype is the exemplpary pattern from which other objects, ideas, or concepts are derived. In few words, is the perfect model.

Create a folder and move into that folder, then open a terminal

mkdir my-folder
cd my-folder

Execute the following Maven instruction. Change it by your preferences.

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

Archetype is just a plugin that contains a collection of goals with a general common purpose. It just creates a simple project based upon a maven-archetype-quickstart archetype.

A new directory with the artifactId attribute name defined its created, move into that file and you will see basic Maven project structure.

maven-notebook-project
|-- pom.xml
`-- src
    |-- main
    |   `-- java
    |       `-- com
    |           `-- mycompany
    |               `-- app
    |                   `-- App.java
    `-- test
        `-- java
            `-- com
                `-- mycompany
                    `-- app
                        `-- AppTest.java

The src/main/java directory contains the project source code, the src/test/java directory contains the test source, and the pom.xml file is the project's Project Object Model, or POM.