class Animal {
public void move() {
System.out.println("Animals can not speak");
}
}
class Dog extends Animal {
public void move() {
super.move(); // invokes the super class method
System.out.println("Dogs can be dangerous ");
}
}
public class TestDog {
public static void main(String args[]) {
Animal b = new Dog(); // Animal reference but Dog object
b.move(); // runs the method in Dog class
}
}