You will create an interface that lists constants and abstract methods to be implemented by various critter classes, an abstract class which partially implements one of the interface’s abstract methods that is identical for any of the critter classes as well as a related instance field and constructor, and finally, 6 classes that represent various critters (actually, one is an inanimate stone) that have basic movement characteristics. all 6 critter classes will inherit (extend) the abstract class mentioned. like with the previous assignment, one major purpose of inheritance is to eliminate redundant code. for this reason you should take full advantage of super class code or methods when developing your subclasses. in this case, the super class will be this abstract class. always remember to use final constants in place of any literal constants (anything other than 0 & 1) you would normally use in your code!