Before we start writing code, let's create a very basic class diagram that shows how we would design the
Animal class hierarchy. I usually start off by doing a very basic diagram that simply shows the classes themselves without much detail. This helps me picture the class hierarchy in my mind. The following diagram shows the class hierarchy for our object-oriented design:
This diagram shows that we have one superclass named
Animal and two subclasses named
Lion. We may think that, with the three categories (land, air, and sea), we would want to create a larger class hierarchy where the middle layer would contain ...