Subscription Tracker

A modern web application for managing personal subscriptions, developed in Java with Spring Boot.

Features

• Full CRUD Operations - Add, view, edit, and delete subscriptions.
• Automated Calculations - Automatically calculates total monthly and yearly costs.
• Interactive Chart - Visualizes expenses by category using a Doughnut Chart.
• Filtering & Sorting - Search by name/category and sort by price or date.
• Data Validation - Server-side validation with localized error messages (Romanian).
• Duplicate Prevention - Prevents adding the same subscription twice.
• REST API - Exposes 14 endpoints for external integrations.
• Modern Design - Fully responsive UI with a Dark Mode theme.

Tech Stack

Category	Technologies
Backend	Java 17, Spring Boot 3.2, Spring MVC, Spring Data JPA
Frontend	Thymeleaf, HTML5, CSS3, JavaScript, Chart.js
Database	H2 Database (embedded)
Build Tool	Maven
IDE	IntelliJ IDEA
API Testing	Postman

Project Structure

src/main/java/com/awj/proiect/subscription_tracker/
├── controller/
│   ├── SubscriptionController.java
│   └── SubscriptionWebController.java
├── model/
│   ├── Subscription.java
│   ├── Category.java
│   └── BillingCycle.java
├── repository/
│   └── SubscriptionRepository.java
├── service/
│   └── SubscriptionService.java
└── SubscriptionTrackerApplication.java