You ask the user to "enter the number of Euros", but where do you actually get the number? I am assuming that it is supposed to be stored in the euro variable. Same question applies to the other ForEx types.
I'm not sure why you didn't continue in the original thread. I also don't understand why you changed your display name from an acceptable "firstName, space, lastName" to the unacceptable "jc". Please read the JavaRanch Name Policy and changed your display name again.
JavaBeginnersFaq "Yesterday is history, tomorrow is a mystery, and today is a gift; that's why they call it the present." Eleanor Roosevelt