📚 Smart Library System (Java Edition)

A complete library management system developed in Java using Object-Oriented Programming, DAO architecture pattern and SQL persistence.

This project was created to simulate a real-world library management application, focusing on clean architecture, business rules, database integration and software engineering best practices.

---

🚀 Features

• User registration and management
• Book registration and catalog management
• Book loan system
• Return management
• SQL database persistence
• DAO Pattern architecture
• Organized layered structure
• Input validation and business rules

---

🛠️ Technologies Used

• Java
• JDBC
• SQL
• DAO Pattern
• Object-Oriented Programming (OOP)
• Git & GitHub

---

📁 Project Structure

library-management-system-java/
│
├── assets/
│   ├── main-menu.png
│   ├── user-registration.png
│   ├── book-registration.png
│   ├── books-list.png
│   ├── user-list.png
│   ├── book-loan.png
│   ├── loan-service-of-system.png
│   └── exit-the-system.png
│
├── database/
│   └── schema.sql
│
├── libs/
│   └── mysql-connector-j.jar
│
├── src/
│   └── main/
│       └── java/
│           └── br/
│               └── com/
│                   └── cia/
│                       └── librarysystem/
│                           ├── dao/
│                           ├── database/
│                           ├── model/
│                           ├── service/
│                           └── Main.java
│
├── .gitignore
├── README.md
└── pom.xml

⚙️ Maven Configuration

This project uses Apache Maven for project structure and build configuration.

<groupId>br.com.cia.librarysystem</groupId>
<artifactId>library-management-system</artifactId>
<version>1.0.0</version>

Java Version

<maven.compiler.source>21</maven.compiler.source>
<maven.compiler.target>21</maven.compiler.target>

---

🎯 Project Goals

This project was developed to improve skills in:

• Software Architecture
• Backend Development
• Database Integration
• Object-Oriented Design
• Layered Application Structure
• Version Control with Git

---

⚙️ Database Setup

Run the SQL script located in:

database/schema.sql

before starting the application.

📸 Preview

Screenshots and system previews.

Main Menu

User Registration

Book Registration

Books List

Users List

Book Loan

Loan Service Of System

Exit The System

📈 Future Improvements

• Better exception handling
• Automated testing
• Logging system
• Administrative dashboard
• REST API version
• Frontend integration
• Docker support

---

🔥 Evolution Roadmap

• Java desktop version
• SQL persistence
• DAO architecture
• Python API version
• Modern backend architecture
• Frontend web interface
• Cloud deployment

---

🧠 Next Version

This project will also be rewritten in Python using modern backend technologies such as:

• FastAPI
• SQLAlchemy
• PostgreSQL
• REST APIs
• Layered Architecture

---

👨‍💻 Author

Developed by John Fernandes.

Focused on Backend Engineering & Software Architecture.