Complete guide to SOLID principles in object-oriented programming. Learn Single Responsibility, Open-Closed, Liskov Substitution, Interface Segregation, and Dependency Inversion with practical examples.
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Software architectureSoftware designSOLID
D (Dependency Inversion) from SOLID
Understand the Dependency Inversion Principle from SOLID. Learn why high-level modules should depend on abstractions, not concrete implementations, and how DIP enables testable, flexible architecture.
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Software architectureSoftware designSOLID
I (Interface Segregation) from SOLID
Learn the Interface Segregation Principle from SOLID. Discover why fat interfaces force unnecessary dependencies and how to design focused, client-specific interfaces.
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Software architectureSoftware designSOLID
L (Liskov Substitution) from SOLID
Understand the Liskov Substitution Principle from SOLID. Learn why subclasses must be substitutable for their parent classes and how violations lead to subtle bugs in inheritance hierarchies.
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Software architectureSoftware designSOLID
O (Open/Closed) from SOLID
Master the Open/Closed Principle from SOLID. Learn how to design software that is open for extension but closed for modification, so new features don't break existing code.
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Software architectureSoftware designSOLID
S (Single Responsibility) from SOLID
Understand the Single Responsibility Principle from SOLID. Learn why a class should have only one reason to change and how SRP leads to more maintainable, testable code.