Polymorphism in Ruby

Polymorphism in Ruby

The term polymorphism means having many forms. In Ruby, polymorphism is carried out by using Inheritance. Polymorphism is achieved by using method overriding.

class Animal
    def eat # this method will overrides on other inherited classes
        puts "Animal eats grasses, water, milk, etc"
    end
end

class Cat < Animal
    def eat
        puts "Cat eats milk & water"
    end
end

class Cow < Animal
    def eat
        puts "Cow eats grasses & water"
    end
end

animal = Animal.new
animal.eat
=> Animal eats grasses, water, milk, etc

animal = Cat.new
animal.eat
=> Cat eats milk & water

animal = Cow.new
animal.eat
=> Cow eats grasses & water