This section covers advanced OOP concepts that build on the fundamentals and four pillars. These topics are essential for writing professional-grade, production-ready code.

---

Topic	Description
Access Modifiers	Controlling visibility of class members
Static Members	Class-level properties and methods
Interfaces	Contracts that define what methods a class must implement
Abstract Classes	Partial implementation base classes
Object Lifecycle	From creation to garbage collection
Memory Management	Stack, heap, references, GC

---

Previous Topic: Object Relationships → Next Topic: Access Modifiers →