// Tagged class - vastly inferior to a class hierarchy! class Figure { enum Shape { RECTANGLE, CIRCLE };
This is kind of conflicting with the classic Java Planet Enum example.
A good mechanism for deciding whether to do an enum or use inheritance:
1. Does the list of values change? (planets don't change for example)
2. Are there too many arguments? (just 2 for planets, but maybe many more for other examples)
