cart.java

网上商城源代码！实现了书店的列表和增加

package bookstore.model.eneity;

import java.util.*;
import java.io.Serializable;
import java.lang.Math;

public class Cart implements Serializable{
	private HashMap items;
	private double cost;
		
	public Cart() {
		
	}
	public void addItem(Product Product,int number) {
	
	}
	public void modifyNumberByProductId(Integer productId,int number){
		
	}
	public void deleteItemByProductId(Integer productId){
		
	}
	public void deleteItemsByProductId(Integer[] productId){
		
	}
	public void clear(){
		
	}	
	public void getCartItem(){
		
	}	
	public HashMap getItemNumber(){
		
		return items;
		
	}
	public boolean isEmpty(){
		
		return true;
	}
	
}