8

8. What is the purpose of using an "abstract" class when using inheritance? When a method is defined as "abstract", what must the programmer make sure to do? What is the one thing you cannot do with abstract classes? 9 What is the dilfference between overriding and overloading? Provide examples to explain the difference. 10. Consider the following two classes. public class Dog public class UnderDog extends Dog public void acto public void acto System.out print(run):( eato: super act): System.out print sleep public void eat0 public void eat0 System.out printear): super.eato System.out print bark) Assume that the following declaration appears in a client program Dog fido - new UnderDogl: new UnderDogl: What is printed as a result of the ca fido.act)? Output