Using interfaces in Java New problems

Suppose you have a displaceable interface and a class circle that implements displaceable Displaceable has a method called move (), which is implemented in circle, of course

What happens in the following scenarios?

Circle a =  new Circle(..);
Displaceable b = a;
b.move()

Does the object reference the circle's move method?

Solution

Yes, b.move () is the same as calling a.move () in the scene. This is polymorphism in action