How does instance variable invocation work when you do A thing = new B(); where B is a subclass of A?

Question

This is probably answered somewhere, but I have no idea what to search for. Imagine you have the following...

The superclass, Animal.java

public class An         


        

Answer 1

You can not override fields, new declaration of noise in Lion hides parent's noise attribute. do like this:

public class Lion extends Animal {

//    public String noise = "ROAR!!";  // <---- Remove this line

    public Lion() {
        noise = "ROAR";
    }

    public String toString() {
        return noise;
    }
}