Suppose I have a parent class and I want to be able to get a list of all its subclasses. As far as I know there is no inherent way to do this (is there?), but what I can do is have the subclasses ...

Financial systems deal with an inherent hierarchy of concepts. Consider how banks categorize accounts: you have a general notion of what a bank account is—something that holds money, tracks ...

The main class used in Java problems is Throwable. This class provide functions that we can use in our errors exceptions. As subclasses of Throwable, Java provide the ...