shoppingcartservice.java

一个经典购物车（shoppingcart）实例代码

package com.jpioneer.application.shoppingcart.service;

import java.util.Iterator;
import java.util.List;

public interface ShoppingCartService {
	public void addItem(String id, String name, double price, double quantity)throws Exception;
	public void delCart(String id) throws Exception;
	public void editCart(String id,double quantity) throws Exception;
	public List getAllCarts() throws Exception;
	public float getTotalQuantity() throws Exception;
	public float getTotalPrice() throws Exception ;
}