✅ *Quick Recap of Core OOP Concepts* 🧩💡 1️⃣ *Encapsulation* - Bundling data (variables) and methods that operate on data into a single unit (class) - Controls access via access modifiers (private, public) to protect data 2️⃣ *Inheritance* - Mechanism where a new class (child/subclass) inherits properties and behavior from an existing class (parent/superclass) - Promotes code reuse and hierarchical relationships 3️⃣ *Polymorphism* - Ability of a method or object to take many forms - *Compile-time polymorphism* (method overloading) and *runtime polymorphism* (method overriding) 4️⃣ *Abstraction* - Hiding complex implementation details and showing only essential features - Achieved using abstract classes and interfaces 5️⃣ *Classes and Objects* - *Class*: Blueprint or template defining properties and behavior - *Object*: Instance of a class, representing a real-world entity 6️⃣ *Access Modifiers* - *private*: Accessible within the class only - *protected*: Accessible within the package and subclasses - *public*: Accessible from anywhere - *default* (no modifier): Accessible within the package 7️⃣ *Method Overloading & Overriding* - *Overloading*: Same method name with different parameters (compile-time) - *Overriding*: Subclass provides specific implementation of a method in superclass (runtime) 8️⃣ *Interfaces* - Abstract type used to specify methods that a class must implement - Supports multiple inheritance in Java 9️⃣ *Composition vs Inheritance* - Composition: Has-a relationship, uses objects of other classes - Inheritance: Is-a relationship, extends behavior from parent class 🔟 *Constructor* - Special method to initialize new objects - Can be overloaded for different ways to create objects 💬 *Double Tap ❤️ for more lessons!*