Digi-Wallet Project

Overview

This Digital Wallet application is built using Java, Hibernate, and MySQL, following a layered architecture with DAO, Service, and Controller layers. It allows users to securely manage wallet transactions, set spending limits, and track expenses. The project implements various features with a focus on security, modular design, and modern development practices.

Features

• User Login: Secure login using username and password.

• Wallet Management: Create, update, view, and delete wallets.

• Transaction Handling: Add, update, view, and manage transactions (credit and debit).

• Spending Limits: Set and enforce spending limits based on categories.

• Transaction Categories: Automatically categorize transactions and generate reports.

• Report Generation: Generate transaction reports for each user.

• Spending Over Limit Alerts: Alert and deny transactions when spending exceeds set limits.

Project Structure

• beans: Contains entity classes like User, Wallet, Transactions, Category, and SpendingLimit.

• DAO: Data Access Object interfaces and implementations.

  UserDAO, UserDAOImpl

  WalletDAO, WalletDAOImpl

  TransactionDAO, TransactionDAOImpl

• Service: Business logic services such as WalletService and ReportService.

• util: Utility classes like HibernateUtil for session management.

• ExceptionHandling: Custom exceptions for database and application errors.

• Main: Contains the main class for launching the application.

Setup and Installation

Prerequisites:

• Java 11+

• Maven 3.x

• MySQL Server

• MySQL Workbench

How to Run:

• Clone the repository:

git clone https://github.com/your-username/digital-wallet.git

cd digital-wallet

• Configure MySQL Database:

  Create a MySQL database named digital_wallet.

  Update your database credentials in hibernate.cfg.xml.

• Build the project:

mvn clean install

• Run the project:

mvn exec:java -Dexec.mainClass="Main"

• Database Configuration:

  Ensure that hibernate.cfg.xml is correctly set up to connect to your MySQL database:

<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/digital_wallet</property>

<property name="hibernate.connection.username">your-username</property>

<property name="hibernate.connection.password">your-password</property>

Usage

User Operations:

• Register a new user with a username, email, and password.

• Log in with valid credentials.

Wallet Operations:

• View wallet balance.

• Add or deduct funds.

• Automatically update balance upon transactions.

Transaction Management:

• Record credit and debit transactions.

• View the last 5 transactions for a logged-in user.

Spending Limit:

• Set spending limits based on categories.

• Alerts are triggered if spending exceeds the limit.

Future Enhancements

• UI Integration: Planning to add a modern UI using front-end frameworks.

• Spring Boot Integration: Option to include Spring Boot for better modularization and web services.

Contributing

Feel free to contribute by submitting a pull request. For major changes, please open an issue first to discuss what you would like to change.