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1. OOP (Object-Oriented Programming)

Get hands-on with:

• Classes and Objects
• Encapsulation, Abstraction
• Inheritance vs Composition
• Polymorphism
• Access Modifiers
• Virtual functions (C++)
• Interfaces (Java, C#)

Build 2–3 OOP mini projects (ATM system, library system, file manager)

• Resources </aside>

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2. OOD (Object-Oriented Design)

Concepts to master:

• Responsibility-driven design
• Cohesion & Coupling
• Interface vs Implementation
• Information hiding
• Class diagrams (UML)
• CRC Cards (Class-Responsibility-Collaboration)
• Model a real-world system in UML and build it
• Resources </aside>

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3. SOLID Principles

• S: Single Responsibility
• O: Open/Closed
• L: Liskov Substitution
• I: Interface Segregation
• D: Dependency Inversion
• Apply SOLID in a mid-sized codebase (e.g., inventory or shopping cart)
• Resources </aside>

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4. Design Patterns

• Creational: Singleton, Factory, Abstract Factory
• Structural: Adapter, Decorator, Composite, Proxy
• Behavioral: Observer, Strategy, Command, State
• Implement and refactor code using patterns (CodeSmells → Patterns)
• Resources </aside>

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5. Clean Code

Clean Code : https://www.youtube.com/playlist?list=PLwWuxCLlF_ufTMlXoJlQvImqz9wIfcWsX

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Project:

https://github.com/yakout/circus-of-plates

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