cart.java

设计 designdevisecontriveprojectengineerframeplanjsp网上购物车设计

package com.shopping;

import java.util.HashMap;

public class Cart {
	private String userId;
	private HashMap items;
	public Cart(){
		items=new HashMap();
	}
	public void addItem(String itemId,int quantity){
		if (items.containsKey(itemId)){
			int count=Integer.parseInt(items.get(itemId).toString());
			items.remove(itemId);
			items.put(itemId, new Integer(quantity+count));
		}else{
			items.put(itemId, new Integer(quantity));
		}
	}
	public void removeItem(String itemId){
		items.remove(itemId);
	}
	
	public HashMap getItems(){
		return this.items;
	}
	public String getUserId() {
		return userId;
	}
	public void setUserId(String userId) {
		this.userId = userId;
	}
	public void clear(){
		items.clear();
	}
}