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How SOLID Principles Help Developers Build Software That Handles Change

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Object-Oriented Programming (OOP) provides powerful tools like encapsulation, inheritance, and polymorphism, but these alone do not guarantee well-structured, maintainable code. Common pitfalls in poorly designed OOP systems include tightly coupled classes, fragile inheritance hierarchies, and classes that handle too many responsibilities at once. SOLID is a set of five design principles — Single Responsibility, Open/Closed, Liskov Substitution, Interface Segregation, and Dependency Inversion — popularized by software engineer Robert C. Martin to address these problems. Each principle guides developers toward writing code that is easier to extend, test, and maintain without breaking existing functionality. The overarching goal of SOLID is not architectural perfection, but software that can evolve gracefully as new requirements emerge.

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How SOLID Principles Help Developers Build Software That Handles Change · ShortSingh