Is there a way to quickly utilize enumeration types to get frequently used operators like arithmetic and stream operators? Is it feasible, for instance, to overload these operators and get the desired outcome? Exactly why do people have strong feelings either for or against this?

I need some help generating a UML diagram from this assigment.

The book makes the claim that "All built-in data types ... are ADTs". Think specifically about primitive data types (int, char, double, etc.): Do you agree or disagree? If you agree, explain why built-in data types fulfill the definition of an ADT. (Be sure to refer to at least one specific example.) If you disagree, explain why (give an example of a built-in type and why it doesn't meet the criteria for an ADT). (To be clear: "built-in" means part of the language specification and often given special recognition by the compiler. Classes that are part of a language's library -- such as ArrayList in Java -- aren't considered "built-in".)