I am trying to cast but I can't find what is wrong, can you please help me

Question

class Animal{
protected void makeSound(){

System.out.println("miou");
};
}

class Cat extends Animal{
protected void makeSound();

}

class Test{
public static void main(String[] args){

Animal a = new Animal();

((Cat)a).makeSound();

}

}

Answer 1

class Animal{
protected void makeSound(){

System.out.println("miou");
};
}

class Cat extends Animal{
@Override
protected void makeSound(){
}
}

class Test{
public static void main(String[] args){

Animal a = new Animal();

a.makeSound();

}

}

Answer 2

class Animal{
protected void makeSound(){

System.out.println("miou");
};
}

class Cat extends Animal{
@Override
protected void makeSound(){
System.out.println("Cat");
}
}
class Test{
public static void main(String[] args){

Animal a = new Animal();

try{
((Cat)a).makeSound();
}catch(ClassCastException ex){
System.out.println("An error has occurred");
}
/**
if you try to attribute an object of class Animal to an object of class Cat, and they are incompatible, you get a class exception.
Better not to do so.
**/
//A working variant that calls the makeSound Cat method
Cat c = new Cat();
c.makeSound();
}
}

Answer 3

@Aidos Zhakupov it doesn't cast Animal instance to it's subclass

Answer 4

misic

Answer 5

Any want to offer assistance in java one on one ?