JSP---online mall shopping cart

Shopping items Cartitem.java

1  PackageZyz.shop.cart;2 3 Importzyz.shop.product.Product;4 5  Public classCartitem {6     PrivateProduct product;//Commodity (not ProductID, but object for better encapsulation)7     Private intNumber of count;//8 9      PublicProduct getproduct () {Ten         returnproduct; One     } A  -      Public voidsetproduct (product product) { -          This. Product =product; the     } -  -      Public intGetCount () { -         returncount; +     } -  +      Public voidSetCount (intcount) { A          This. Count =count; at     } -}

Shopping Cart Cart.java

1  PackageZyz.shop.cart;2 3 Importjava.util.ArrayList;4 ImportJava.util.Iterator;5 Importjava.util.List;6 7  Public classCart {8list<cartitem> items =NewArraylist<cartitem>();//all Shopping items9 Ten      PublicList<cartitem>GetItems () { One         returnitems; A     } -  -      Public voidSetitems (list<cartitem>items) { the          This. Items =items; -     } -Add a shopping item CI to the shopping cart -      Public voidAdd (Cartitem ci) { +Iterator<cartitem> it=items.iterator (); -          while(It.hasnext ()) {//If the item is in the cart, the number of items added is 1 +Cartitem item=It.next (); A             if(Item.getproduct (). Getpid () = =ci.getproduct (). Getpid ()) { atItem.setcount (Item.getcount () +1); -                 return; -             } -         } - Items.Add (CI);//If you do not have this item, add the shopping cart -     } inCalculate the total price of a shopping cart -      Public DoubleGettotalprice () { to         Doubles=0.0; +Iterator<cartitem> it=items.iterator (); -          while(It.hasnext ()) { theCartitem item=It.next (); *S+=item.getproduct (). GetPrice () *Item.getcount ();//Price * Quantity accumulation $         }Panax Notoginseng         returns; -     } theDelete a specified shopping item +      Public voidDeletecartitembyid (intproductId) { AIterator<cartitem> it=items.iterator (); the          while(It.hasnext ()) { +Cartitem item=It.next (); -             if(Item.getproduct (). Getpid () = =productId) {//If you have this item, remove it from your shopping cart $ It.remove (); $             } -         } -     } the}

JSP---online mall shopping cart