shopcart.java

网上购物系统的简易代码

package com.tarena.develop.service.impl;

import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;

import com.tarena.develop.entity.OrderLine;
import com.tarena.develop.entity.Product;

public class ShopCart {
private Set<OrderLine> orderlines=new HashSet<OrderLine>();
private Double cost;
public void addProduct(Product product){
//	int pid=product.getPid();
//OrderLine 	orderline=new OrderLine();
	
	Boolean flag=false;
Iterator<OrderLine> it=orderlines.iterator();
while(it.hasNext()){
	OrderLine ol=it.next();
	if(ol.getProduct().getPid()==product.getPid()){
		ol.setAmount(ol.getAmount()+1);
		flag=true;
		cost+=product.getPrice();
		return;
	}
}
	if(flag){
		OrderLine orderline=new OrderLine();
		orderline.setProduct(product);
		orderline.setAmount(1);
		orderlines.add(orderline);
		cost+=product.getPrice();
	}
}

}