Casting in equals method

Question

I have a question about overriding the equals method in Java. In my book, I have the following example:

public class Dog{
     private String na         


        

Answer 1

I think that your demo class is missing a hashCode() method. The two objects can only be equal if their call to an overridden hashCode() is equal. (the same integer value).

I'm pretty sure you need both to guarantee this equation.