Dart Classes and Objects Made Easy for Beginners

Understanding classes and objects is essential when learning object-oriented programming in Dart. Dart makes it simple to create reusable, organized code using classes and objects, even for beginners. In this guide, we’ll walk you through the basics with clear explanations and a complete example.

A class in Dart is a blueprint for creating objects (instances), and an object is a specific instance of a class. You can use classes to group data and functions (methods) together in a structured way.

Here’s a complete example of using classes and objects in Dart:

void main() {
  // Create an object of the Car class
  Car myCar = Car('Toyota', 2020);
  
  // Access methods
  myCar.displayInfo();
}

// Define a class
class Car {
  String brand;
  int year;

  // Constructor
  Car(this.brand, this.year);

  // Method
  void displayInfo() {
    print('Brand: $brand');
    print('Year: $year');
  }
}

In the example above:

• The Car class has two properties: brand and year.
• The constructor Car(this.brand, this.year) initializes the object.
• The method displayInfo() prints out the car’s information.

For more details on object-oriented programming in Dart, check the official documentation at Dart.dev – Classes.

With just a few lines of code, you can begin writing modular, clean, and maintainable applications in Dart. Understanding how to use classes and objects effectively is a key step in becoming proficient in Flutter and Dart development.