Design and Implementation of a Secure Desktop Based Online Banking System: A Java Swing and Database-Driven Approach

This research paper presents the comprehensive design and implementation of a robust secure, desktop-based online banking system developed using the Java Swing framework and relational database management technologies. As financial institutions move toward digitized workflows, the need for high-integrity software that prevents unauthorized access while maintaining operational efficiency is paramount. This system provides core banking functionalities including multi-factor user and administrator authentication, automated account number generation, fund transfers via unique identifiers, and real-time transaction tracking. A strict role-based access control (RBAC) mechanism is integrated to ensure a secure logical separation between customer-facing operations and administrative privileges. The application architecture follows a modular, threetiered approach comprising the Graphical User Interface (GUI), Business Logic, and Data Access Layers, which significantly enhances maintainability and system scalability. Database-driven persistence, managed via MySQL and JDBC, guarantees ACID (Atomicity, Consistency, Isolation, Durability) properties for all financial operations. The proposed system demonstrates that desktop-based banking solutions can be implemented with high reliability using object-oriented programming principles and structured database design.