This project showcases a simple yet robust Spring Boot API for managing banking operations.

• Deposit: Add funds to an account.
• Withdraw: Withdraw funds from an account.
• Transfer: Transfer funds between accounts.
• Get All Accounts: Retrieve a list of all accounts.
• Get Users: Fetch details of all users.
• Get All Transactions: Fetch all transactions for a user/account.

• Spring Boot
• PostgreSQL
• Lombok
• hibernate
• Mapstruct
• Postman

• Controller: Implements RESTful endpoints for handling HTTP requests.
• Service: Handles business logic and orchestrates interactions between components.
• Repository: Interacts with the database for CRUD operations.
• DTOs (Data Transfer Objects): Facilitate data exchange between layers.
• Mappers: Convert entities to DTOs and vice versa using mapstruct.
• Exception Handling: Custom exception handling for graceful error responses.
• AOP (Aspect-Oriented Programming): Global exception handler for centralized error management.

1. Clone the repository.
2. Navigate to the project directory.
3. Run mvn spring-boot:run to start the application.
4. The API will be available at https://localhost:8080.

POST /transactions/deposit
{
    "transactionType" : "CREDIT",
    "amount": "12000",
    "accountId": "1"
}