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 ...

You can write a simple generic launcher in the following way: public class Launcher{ public static void main(String[] args){ if (args.length>0) { try { Command ...

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 ...

Project Description -This project demonstrates inheritance, abstraction, and polymorphism in Java through a phone call billing system: -PhoneCall is an abstract superclass representing any phone call.