Money.java

package org.easyb.bdd.money;

public class Money {

    private int fAmount;
    private String fCurrency;

    public Money(int amount, String currency) {
        fAmount = amount;
        fCurrency = currency;
    }

    public int amount() {
        return fAmount;
    }

    public String currency() {
        return fCurrency;
    }

    public Money add(Money m) {
        return new Money(amount() + m.amount(), currency());
    }
}