- 551 名前：デフォルトの名無しさん [2008/02/08(金) 03:34:06 ]
- public class Order {
private Customer customer;
private Lottery lottery;
private int num;
public Order(costomer, lottery, num){
this.customer = customer;
this.lottery = lottery;
this.num = num;
}
.... getterとか
}
みたいなクラス作って、Customerの１注文ごとにOrderのインスタンスを作って、
CustomerごとにArrayList<Order>にまとめて、注文を受けたShopインスタンスが管理しておけばいい。
↓こんな感じで
public class Shop {
private HashMap<Customer, ArrayList<Order>> orders;
....中略
public void order(Customer customer, Lottery lottery, int num){
ArrayList<Order> customer_orders = orders.get(customer);
if (null == customer_orders){
customer_orders = new ArrayList<Order>();
orders.put(Customer, customer_orders);
}
customer_orders.add(new Order(customer, lottery, num));
}
}
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