cart.java

用jsp做的一个小例子

package com.today.car.model;

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

import com.today.car.vo.Car;

public class Cart {
	List list = new ArrayList();

	public List getItems() {
		return list;
	}

	public void setItems(List list) {
		this.list = list;
	}

	public void add(Car ci) {
		Iterator iter = list.iterator();
		while (iter.hasNext()) {
			Car buy = (Car) iter.next();
			if (buy.getP_id() == ci.getP_id()) {
				buy.setBuy_count(buy.getBuy_count() + 1);
				return;
			}
		}
		list.add(ci);
	}

	public float getTotalMemberPrice() {
		float f = 0.0f;
		Iterator iter = list.iterator();
		while (iter.hasNext()) {
			Car car = (Car) iter.next();
			f += car.getP_price() * car.getBuy_count();
		}
		return f;
	}

	public void deleteItemById(int productId) {
		Iterator iter = list.iterator();
		while (iter.hasNext()) {
			Car car = (Car) iter.next();
			if (car.getP_id() == productId) {
				iter.remove();
			}
		}
	}
}