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PayX – Digital Wallet System

Project Overview
  • Project Title: PayX – Digital Wallet System
  • Domain: Fintech
  • Technology Stack: Java 17, Spring Data JPA, MySQL, HTML, CSS, React
  • Duration: 3 Weeks
Project Description

PayX is a secure digital wallet platform that allows users to store money, transfer funds, pay for services, and manage transactions in real-time. It mimics real-world digital wallets (like Paytm, Google Pay, Venmo) and focuses on simplicity, speed, and security. The system supports peer-to-peer (P2P) transfers, transaction history, wallet top-ups, and integration with external bank accounts or cards.

Key Objective
  • Enable Users to Create and Fund Digital Wallets.
  • Facilitate Instant Peer-to-Peer Transfers.
  • Maintain Full Transaction History.
  • Ensure Secure and Verified Access.
  • Support Wallet-to-Bank Withdrawals.
  • Provide Dashboard & Balance Insights.
  • Send Notifications on Transactions.
Core Feature
  • User Authentication
  • Expense Tracking
  • Income Management
  • Budgeting System
  • Dashboards & Charts
  • Savings Goals
  • Reports & Export
  • Alerts/Reminders

Tools & Technologies Used

Category Tools / Technologies
Language Java 17
Framework SpringBoot
ORM Spring Data JPA
API Documentation Swagger / SpringDoc OpenAPI
Authentication & Security Spring Security + JWT
Logging Log4j
Database MySQL [main database] / Redis (For OTP)
FrontEnd React.js
Visualization & Reporting JasperReports / Apache POI
Building Tools & Dependencies Maven, Docker, Git, Jenkins
Testing Mockito, Postman (API Test)
Third-Party Integration Mock or Rozorpay (Bank Simulation API) ,Aadhar XML Parser (KYC / Identity Check) ,Send Grid, Java Mail (Email Notification) ,Twilio, Firebase (OTP Verfication)
Cloud and Deployment AWS EC2, Spring Boot Actuator, AWS RDS

Prerequisites

💻 System Requirements
  • Windows / Linux / macOS
  • Minimum 8 GB RAM (Recommended: 16 GB)
  • Java JDK 17 installed and configured (JAVA_HOME set)
  • Node.js (v16+ recommended) and npm or yarn
📦 Software Dependencies
  • Java 17 (Backend Development)
  • MySQL Server (Main Database)
  • Redis (For OTP and temporary data)
  • Docker (Optional but recommended for deployment)
  • Git (Version Control)
  • Postman (API Testing)
  • JasperReports / Apache POI (Report Generation)
  • Maven (Build & Dependency Management)
🧰 Tools & Services
  • IDE: IntelliJ IDEA / Eclipse for Spring Boot, VS Code for React.js
  • SendGrid / JavaMail credentials (Email Notification Setup)
  • Twilio / Firebase (for OTP Verification)
  • Mock Bank API / Razorpay (Payment Integration Simulation)
  • AWS Account (for EC2 and RDS deployment)
  • Jenkins (for CI/CD Integration)
🌐 Technical Knowledge
  • Spring Boot & Spring Security Fundamentals
  • JWT-based Authentication & Authorization
  • React.js Components & State Management
  • RESTful API Design & Swagger / SpringDoc OpenAPI
  • MySQL Database Design & Queries
  • Redis Caching Mechanism
  • Basic Docker, Git, and Deployment Workflows
  • Reporting with JasperReports or Apache POI
  • TechnologyJava
  • TypeWeb Application
  • Duration3 weeks
  • ModeOnline/Offline
  • CertificateYes
  • Project ReviewIncluded
  • Doubt SupportLive & Chat Support
  • Career SupportResume & Interview Tips
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