Struts框架 ShoppingCart

 package com.yourcompany.struts.model;

import java.util.ArrayList;

public class ShoppingCart
{
   ArrayList<Book> booklist = new ArrayList<Book>();

public void addBook(Book newbook)
     {
    booklist.add(newbook);
     }

public void delete(String getIsbn)
{
 Book getbook =null;
 
 for(int i =0 ; i<booklist.size();i++)
  {
  getbook = booklist.get(i);
  
 if(getIsbn.equals(getbook.getIsbn()))
 {
  
  booklist.remove(i);
  
 }
 
  }
 
}

public Book[] Booklist()
   {
 Book[] BookList = new Book[booklist.size()];
 
 for (int i = 0; i < booklist.size(); i++)
   {
  BookList[i] = (Book) booklist.get(i);
   }
 
    return BookList;
   }