For ANY Action class, we start with focusing on the functionality
        (in Java the methods)
        
        I need to design WHAT the class is going to do, before I
        code HOW it will do it
        
        I need to start by listing the methods, long before I code them
        I list them in the main as I design the program flow.
        
        Java formalizes the process as an Interface, an Interface
        is a list of methods, and is critical during design
        
        for example:
        
        Java defines a list of method EVERY Database MUST support
        the oracle and DB2, and MySql need to code their Database
        Drivers to implement these methods