Need help with Java Question : The CashRegister class has an unfortunate limitation, it is closely tied to the coin system in the United States and Canada. Research the system used in most of Europe. Your goal is to produce a cash register that works on Euros and cents. Rather than designing another limited cash register implementation for the European market, you should design a separate Coin class and a cash register that can work with coins of all types. Create a Tester class that will test all of the methods of the Coin class class and CashRegister class.