Object Oriented Programming

overview

Remember Key Terms

• Class: blueprint for creating objects.
• Object (Instance): concrete entity from a class.
• Attribute (Property): object data/state.
• Method: behavior defined on a class/object.
• Encapsulation: restrict access; expose safe methods.
• Abstraction: simplify by showing essential operations.
• Inheritance: new class reuses/extends a base class.
• Polymorphism: same call, different method bodies.
• Constructor: initializes state when object is created.
• Interface: method contract without concrete implementation.