Classes, Objects, and Methods
Learn to define classes, create objects, and implement instance and class methods to encapsulate behavior.
OOP Basics: Classes & Objects
Welcome to Object-Oriented Programming (OOP) in Objective-C! OOP helps organize code into reusable blueprints called classes.
From these blueprints, we create individual items called objects. Think of a class as a cookie cutter, and an object as a cookie!
Your First Class: Header File
Every Objective-C class has two main files: a .h (header) and a .m (implementation) file.
The header file (.h) declares what your class is and what it can do. It's like the public blueprint.
Here's how to declare a simple Person class:
// Person.h
#import <Foundation/Foundation.h>
@interface Person : NSObject
// Method declaration
- (void)sayHello;
@endAll lessons in this course
- Classes, Objects, and Methods
- Properties and Instance Variables
- Protocols and Categories
- Inheritance and Method Overriding