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Series
This series explains core Java design principles and SOLID principles with simple examples, real-world use cases, and interview-focused explanations to help developers write clean, maintainable, and scalable code.
Introduction In software development, one of the biggest challenges is tight coupling — when one class directly depends on another concrete class. This makes systems hard to modify, test, and extend.
SOLID Design Principle "Clients should not be forced to depend on interfaces they do not use." The Interface Segregation Principle (ISP) is one of the five SOLID principles that helps developers des
Introduction When designing software using inheritance, a common mistake developers make is creating subclasses that change expected behavior. This leads to: Unexpected bugsBroken polymorphismDifficul
What is Open/Closed Principle? The Open/Closed Principle (OCP) is one of the SOLID design principles. 👉 It states: Software entities (classes, modules, functions) should be open for extension but cl
Writing Clean, Maintainable and Scalable Code Software systems grow over time. As features increase, code can easily become complex and difficult to maintain. To prevent this, developers follow design
Introduction When developers read code, they should be able to understand it quickly without confusion. However, many programs become difficult to read because high-level logic and low-level implement
