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Ah I understand what you mean the problem is exchangerates must know the currentcurrency value to retrieve the info as I don't want to achieve the currency info for all countries as they all have...

Thank you for your reply. By encapsulating exchangerates in converter do you just mean effectively merging the two classes? My understanding is that it is best to have each class do one job only. I...

Hi there, I'm working on a currency converter which uses XML to dynamically retrieve exchange rates. Below is my class diagram so far:

http://img156.imageshack.us/img156/1065/umlclassdiagram.jpg
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