Java Foundations: Introduction to Program Design & Data Structures, 2/e John Lewis, Peter J. DePasquale, Joseph Chase Test Bank: Chapter 8 13) When designing a class hierarchy, it is important that common features be a) higher in the class hierarchy b) lower in the class hierarchy c) near the middle of the class hierarchy d) in abstract classes e) in the Object class 14) Which of the following methods are included in every class created in Java by inheritance? a) next b) toString c) compareTo d) charAt e) none of the above 15) Of the classes below, the one that is most likely to be declared abstract is a) Bat b) Squirrel c) Animal d) Iguana e) Parrot