SOLID DESIGN PRINCIPLES IN SOFTWARE ENGINEERING
Abstract
This article analyzes the theoretical foundations of the SOLID design principles and their importance in modern software engineering practices. As software systems become increasingly complex, ensuring maintainability, scalability, and reusability of code has become a significant challenge in software development. The study examines the five fundamental SOLID principles-Single Responsibility, Open–Closed, Liskov Substitution, Interface Segregation, and Dependency Inversion-and demonstrates their practical application in object-oriented programming through illustrative examples. The research also highlights how the implementation of these principles contributes to improving software architecture, enhancing modularity, simplifying system maintenance, and supporting the sustainable development of software products.