🏦 Banking System

A robust and secure Banking System built using Core Java, Spring Boot, MySQL, and Spring Data JPA. This project provides RESTful APIs for handling user authentication, account management, fund transfers, transaction history, and real-time balance checks. It also supports role-based access and automated notifications.

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🚀 Features

✅ Secure User Registration & Login (JWT-based)
✅ Account Creation & Management
✅ Fund Transfer between Accounts
✅ View Transaction History
✅ Real-Time Balance Check
✅ Role-Based Access Control (Admin / User)
✅ RESTful API Architecture
✅ Input Validation & Error Handling
✅ Automated Email or Console Notifications
✅ MySQL Integration with JPA/Hibernate

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🧰 Tech Stack

• Java (Core Java, Java 17 or above)
• Spring Boot
• Spring Data JPA
• MySQL
• Hibernate
• JWT for Authentication
• Lombok
• Maven
• Postman for API Testing

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📁 Project Structure

src
└── main
    ├── java
    │   └── com.bankingsystem
    │       ├── controller
    │       ├── service
    │       ├── repository
    │       ├── model
    │       └── config
    └── resources
        ├── application.properties
        └── data.sql

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🛠️ Getting Started

✅ Prerequisites

• Java 17+
• Maven
• MySQL Server

🚦 Steps to Run

1. Clone the Repository

   git clone https://github.com/your-username/Banking-System.git
   cd Banking-System

2. Set up MySQL Database

   CREATE DATABASE banking_system;

3. Configure application.properties

   spring.datasource.url=jdbc:mysql://localhost:3306/banking_system
   spring.datasource.username=root
   spring.datasource.password=your_password
   spring.jpa.hibernate.ddl-auto=update
   spring.jpa.show-sql=true

4. Build and Run

   mvn spring-boot:run

5. Test with Postman

   • Base URL: http://localhost:8080/api

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📮 API Endpoints

Method	Endpoint	Description
POST	/auth/register	Register new user
POST	/auth/login	Login and get JWT token
GET	/accounts/{id}	Get account details
POST	/accounts/transfer	Transfer funds
GET	/transactions/{userId}	Transaction history
GET	/accounts/balance/{id}	Real-time balance check

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🔐 Role-Based Access

Role	Access Permissions
Admin	View all users, transactions, delete users
User	Manage own account, transfer, view history

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🧪 Testing

• Use JUnit and Mockito for service/controller layer testing.
• Coverage for login, transfer, and exception handling.

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🙌 Acknowledgements

• Spring Boot Documentation
• MySQL Community
• Baeldung & StackOverflow

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📬 Contact

Akhilesh Ojha
📧 akhil00664@gmail.com
🌐 LinkedIn

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📄 License

This project is licensed under the MIT License - see the LICENSE file for details.