🏅 OOP & Polymorphism Demonstration (Java)

This project serves as a practical demonstration of core Object-Oriented Programming (OOP) principles in Java. It models a sports hierarchy to showcase how different objects can interact under a unified structure using Polymorphism.

🧠 Core OOP Concepts Implemented

1. Abstraction & Inheritance

• Designed an abstract base class Player to define common attributes (name, team, energy) and establish a contract with the abstract method doTraining().
• Created concrete subclasses FootballPlayer and VolleyballPlayer that inherit from Player and expand upon it with their unique attributes (goals, blocks, etc.).

2. Polymorphism

• The Demo class stores different types of players in a single Player[] array.
• A single polymorphic loop calls doTraining() on each object, and Java automatically resolves the correct overridden method at runtime.

3. Downcasting & Instance Checking

• Implemented safe downcasting using the instanceof operator to access subclass-specific methods (e.g., getBlocks(), getPoints()) only when the object is explicitly a VolleyballPlayer.

4. Method Overriding

• Custom implementations of equals() and toString() methods across the hierarchy, utilizing super calls to maintain the inheritance chain and ensure complete object comparison.

🚀 Execution

The application runs entirely in the console, generating player objects, invoking training routines, and filtering for highly successful athletes based on real-time state changes.