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Java Inheritance in Java Inheritance in Java Everything Inherits from Object

Posted by Vuyolwenkosi Tshuma
Vuyolwenkosi Tshuma
4,830 Points

I don't understand how my solution is incorrect

how do I equate two objects?

KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,972 Points

Can you post your solution (and the question)?

1 Answer

Fatemah Tavakoli
Fatemah Tavakoli
13,797 Points
Fatemah Tavakoli
Fatemah Tavakoli
13,797 Points

This task is trying to demonstrates class and inheritance in OOP. Meaning one class is allow to inherit the features(fields and methods) of another class. 

class Toaster {
  void makeToast() {
    System.out.println("Toasted!");
  }
} 
class Duck extends Toaster {
  void quack() {
    System.out.println("Quack!");
  }
}

The super class in our case is the Toaster. and Duck inherits from the Toaster class. (Since Duck extends Toaster) We are reusing the attributes and methods of the existing class(Toaster) when we are creating the new class(Duck). meaning the Toaster is the parent class of the Duck class. so it is true: "A Duck is a Toaster".

Check this link for more detailed explanation: https://docs.oracle.com/javase/tutorial/java/IandI/subclasses.html

Hope it helps! :)