public class ItemService {

  private Map<String, ItemDetail> items = DatabaseClass.getItems();

  public Map<String, ItemDetail> getItems() {
    return items;
  }

  public ItemService() {
    items.put(
        "First",
        new ItemDetail(
            1L,
            "Air Jordan's",
            "Air Jordan 1",
            "Jordan",
            "Basketball shoes",
            "Black/Red",
            5.0,
            2,
            "Male",
            "9"));
    items.put(
        "Second",
        new ItemDetail(
            2L,
            "Nike Elite shoes",
            "Kobe 1",
            "Nike",
            "Basketball shoes",
            "White/Yellow",
            4.9,
            5,
            "Male",
            "10"));
  }

  public List<ItemDetail> getAllItems() {
    return new ArrayList<ItemDetail>(items.values());
  }
}