invoiceitem.java

库存管理系统 采用JAVA来编写 希望对学习JAVA 的同学有所帮助

package merchant;

public class InvoiceItem extends Item{
	protected double total;
	public InvoiceItem(InventoryItem item,int units1)
	{
		super(item.id);
		desc=item.desc;
		price=item.price;
		units=units1;
		total=price*units;
	}
	public String toString()
	{
		return super.toString()+" ="+Util.dollar(total)+"\t（"+desc+")";
	}
}