shop.java

JAVA编程

public class Shop {
	ComputeTotalSales[] goods;
	   double totalSales=0;
	   Shop(ComputeTotalSales[] goods)
	   {
	      this.goods=goods;
	   }
	   public double giveTotalSales()
	   {
	      totalSales=0;
	      for(int i=0;i<goods.length;i++) 
	      {
	    	  totalSales=totalSales+goods[i].totalSalesByYear();
	      } //计算totalSales。
	      return totalSales;
	   }    

}