echo-app-maven

This repository contains the source code for a modular Java project built with Apache Maven. It is designed to accompany two lessons from the DIBS course, which walk you through the process of creating and scaling a Maven-based Java project.

✍️ While both lessons are written in Spanish, the code in this repository is fully in English to ensure accessibility for a broader audience.

📚 Companion Lessons

• ✅ Creating a Basic Maven Project
  Learn how to generate a simple Maven project using the quickstart archetype, define its metadata (groupId, artifactId, etc.), understand the default folder structure, and run your first Java app.

• 🏗️ Modular Architecture with Maven and Java
  Take your project to the next level by transforming it into a multi-module setup with reusable components. You'll learn to separate responsibilities using a lib module and an app module, structure your POM files accordingly, and compile and run modular apps from the command line.

🧱 Project Structure

This is a multi-module Maven project with two main modules:

• lib: A library module that contains a simple utility method.
• app: The main application that consumes the utility from lib.

echo-app-maven/
├── pom.xml              # Root POM (parent)
├── lib/
│   ├── pom.xml          # Library module
│   └── src/main/java/com/github/username/echo/EchoUtils.java
├── app/
│   ├── pom.xml          # Application module
│   └── src/main/java/com/github/username/App.java

🚀 Build & Run

Prerequisites

• Java 8 or higher
• Apache Maven 3.6 or later

Commands

Linux/macOS

mvn clean install && \
mvn -pl app exec:java \
  -Dexec.mainClass=com.github.username.App \
  -Dexec.args="Ryugamine Celty Shizuo"

Windows (PowerShell)

mvn clean install && `
mvn -pl app 'exec:java' `
  '-Dexec.mainClass=com.github.username.App' `
  '-Dexec.args=Ryugamine Celty Shizuo'

💬 Output Example

After a successful build, the output should include a lot of Maven logs followed by:

Ryugamine
Celty
Shizuo

🎓 Topics Covered

This repository demonstrates:

• Generating a basic Maven project using an archetype.
• Understanding project metadata: groupId, artifactId, version, and package.
• Creating a multi-module architecture with shared configuration.
• Reusing logic across modules using Maven dependencies.
• Running Java programs via exec-maven-plugin.

⚖️ License

This project is licensed under the BSD-2-Clause License. Feel free to use, modify, and distribute it as per the terms of the license.