Question

I have this example:

public class Inheritance {

    public static class Animal {        
        public void Scream() {
            System.out.println("I'm an animal");
        }       
    }

    public  static class Mammal extends Animal{
        public void Scream(){
            System.out.println("I'm a mammal");
        }       
    }

    public  static class Tiger extends Mammal{
        public void Scream(){
            System.out.println("I'm a tiger");
        }       
    }

    public static void main (String[] args){

        Animal tiger = new Tiger();
        tiger.Scream();
    }

}

Of course, I will receive: “I’m a tiger”. But, I don’t know how to print “I’m a mammal” or “I’m an animal”

@: and please answer for me sub-question: in case Tiger class, What is superclass of Tiger. Mammal or Animal ?

Please help me 🙂

Thanks ::)

Answer 1

In method overriding, java will always check whose object has been created at run time. If you wanna a print “I’m a mammal”:

Animal m = new Mammal();
m.Scream();

this will print “I’m a mammal”.

And if you wanna a print “I’m a animal”:

Animal a = new Animal();
a.Scream();