Polymorphism in Dart

Polymorphism is a fundamental concept in object-oriented programming that allows objects of different classes to be treated as objects of a common superclass. In Dart, polymorphism is primarily achieved through method overriding and interfaces.

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Polymorphism in Dart

Method Overriding in Polymorphism

Polymorphism allows a subclass to provide a specific implementation of a method that is already defined in its superclass. This is done using the @override annotation.

class Animal {
  void makeSound() {
    print("Animal makes a sound");
  }
}

class Dog extends Animal {
  @override
  void makeSound() {
    print("Dog barks");
  }
}

class Cat extends Animal {
  @override
  void makeSound() {
    print("Cat meows");
  }
}

void main() {
  Animal myAnimal = Dog();
  myAnimal.makeSound(); // Output: Dog barks
  
  myAnimal = Cat();
  myAnimal.makeSound(); // Output: Cat meows
}

Using Abstract Classes for Polymorphism