SOLID Principles in Java with Code Examples
Master SOLID principles in Java with real-world code examples. Learn Single Responsibility, Open/Closed, Liskov, Interface Segregation, and Dependency Inversion.
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Introduction to Design Patterns in Java – Gang of Four Guide
Learn what design patterns are, why they matter, and how they help Java developers write clean, modular, and testable code. Covers all 23 GoF patterns categorized into creational, structural, and behavioral types.