📅 Day 1 → Class, Object & Constructors
Learn how to create classes and objects.
Understand instance variables and methods.
Implement constructors (default & parameterized).
✅ Task: Create a Student class with id, name, and a constructor to initialize values.
📅 Day 2 → Static Keyword
Learn about static variables, static methods, and static blocks.
Understand the difference between instance vs static members.
✅ Task: Create a Counter class that tracks how many objects have been created using a static variable.
📅 Day 3 → Inheritance & super()
Learn how one class can inherit from another.
Understand single inheritance and multilevel inheritance.
Use super() to call parent class constructors and methods.
✅ Task: Create a Vehicle class → extend it into Car and Bike. Use super() to initialize parent properties.
📅 Day 4 → Polymorphism + Mini Project
Learn method overloading (compile-time polymorphism).
Learn method overriding (runtime polymorphism).
Understand dynamic method dispatch.
✅ Mini Project: Build a Vehicle Rental System where Car, Bike, and Truck calculate rental cost differently using polymorphism.
📅 Day 5 → Abstraction & Encapsulation
Learn Encapsulation → wrapping data (private fields + getters/setters).
Learn Abstraction → hiding implementation, showing only essential features.
Understand difference:
Encapsulation = data hiding
Abstraction = implementation hiding
✅ Task: Build a BankAccount class with private balance and public methods (deposit(), withdraw(), getBalance()) to demonstrate encapsulation & abstraction.