🚀 J2EE-REST

📝 Project Overview

J2EE-REST is a simple yet practical Java EE project that demonstrates how to build RESTful web services using JAX-RS. The project showcases the creation of REST endpoints for basic operations, including a sample user resource and a root endpoint, making it ideal for learning the fundamentals of REST API development in an enterprise Java environment.

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📽️ Demo Video

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🗂️ Project Structure

J2EE-REST/
├── src/
│   ├── main/
│   │   ├── java/
│   │   │   └── lk.jlat.web.rest/
│   │   │       ├── Home
│   │   │       ├── RESTApplicationPath
│   │   │       ├── User
│   │   │       └── UserResource
│   │   └── resources/
│   └── test/
├── pom.xml

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📦 Module Details

🟦 rest

• Home
  Root REST endpoint (/api/) responding with a simple "Hello World" message to verify the API is running.

• RESTApplicationPath
  Configures the JAX-RS application path (/api) for all REST endpoints.

• User
  Plain Java object (POJO) representing user data with fields for id, name, and email.

• UserResource
  REST resource exposing endpoints under /api/users. Supports retrieving a user by ID and returns JSON data.

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⚙️ Key Features

• ✅ RESTful API endpoints with JAX-RS
• ✅ Simple GET endpoint for root and user resource
• ✅ JSON response for user data
• ✅ Clean, modular Java package structure
• ✅ Maven-based build for easy setup and deployment

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💡 How It Works

• The application is accessible under the /api base path.
• The Home endpoint responds to GET /api/ with a plain text greeting.
• The UserResource exposes GET /api/users/{id} to fetch user details as JSON.
• All endpoints are implemented using standard JAX-RS annotations for clarity and maintainability.

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🛠️ Technologies Used

• Java 11
• Jakarta EE 10 (JAX-RS)
• Maven

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📚 Learning Outcomes

• ✅ Understand the basics of RESTful web service design in Java EE
• ✅ Learn to implement and expose REST endpoints with JAX-RS
• ✅ Practice structuring a Java EE project for REST API development
• ✅ Gain hands-on experience with JSON serialization in Java

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🧑‍💻 Author

Chamika Gayashan
Undergraduate Software Engineer | Sri Lanka
Linkedin: @chamikathereal
Current date: Monday, June 23, 2025, 7:02 PM +0530