public synchronized int getNumberOfItems() {
numberOfItems = 0;
for (Iterator i = getItems().iterator(); i.hasNext(); ) {
ShoppingCartItem item = (ShoppingCartItem) i.next();
numberOfItems += item.getQuantity();
System.out.println("number of items is " + numberOfItems);
}
return numberOfItems;
}
public synchronized double getTotal() {
double amount = 0.0;
for (Iterator i = getItems().iterator(); i.hasNext(); ) {
ShoppingCartItem item = (ShoppingCartItem) i.next();
BookDetails bookDetails = (BookDetails) item.getItem();
amount += (item.getQuantity() * bookDetails.getPrice());
}
return roundOff(amount);
}
public synchronized void remove(String bookId) {
if (items.containsKey(bookId)) {
ShoppingCartItem scitem = (ShoppingCartItem) items.get(bookId);
scitem.decrementQuantity();
if (scitem.getQuantity() <= 0) {
items.remove(bookId);
}
numberOfItems--;
}
}
public synchronized void add(String bookId, BookDetails book) {
if (items.containsKey(bookId)) {
ShoppingCartItem scitem = (ShoppingCartItem) items.get(bookId);
scitem.incrementQuantity();
System.out.println("in add, quantity is " + scitem.getQuantity());
} else {
ShoppingCartItem newItem = new ShoppingCartItem(book);
items.put(bookId, newItem);
System.out.println("in add, quantity is " + newItem.getQuantity());
}
// numberOfItems++;
}