Adding multiple modules in one project : eclipse

A project can consist multiple modules, where a module is a project with some dependency on each other.

Create a Parent project:  ( which behaves like parent to further maven modules)

File – New – Other – Maven Project

Check “Create a simple Project (Skip archetype selection)

Next

Group id : com.parent

Artifact id : parent

Packaging : POM ß

Finish

This is how pom.xml looks like

<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.parent</groupId>

  <artifactId>parent</artifactId>

  <version>0.0.1-SNAPSHOT</version>

  <packaging>pom</packaging>

</project>

Create a child / maven module:

File – New – Other – Maven Module

Check “Create a simple Project (Skip archetype selection)

Module Name: Child

Parent Project: Parent

Finish

This is how pom.xml looks like

<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>

  <parent>

    <groupId>com.parent</groupId>

    <artifactId>parent</artifactId>

    <version>0.0.1-SNAPSHOT</version>

  </parent>

  <artifactId>child</artifactId>

</project>

Observations:

In child pom.xml:  observe that parent tag, which talks about who is my parent

Note: any dependencies declared in parent pom.xml are available to child pom.xml by default.

Testing:

GO to parent pom.xml file folder and say > mvn clean

Now two projects will be created.