Android game rpg inventory system

Question

I am using an ArrayList as my \"inventory\". I am having trouble figuring out a way to add multiples of the same item without taking up a spot in the \"inventory\". For exam

Answer 1

or an class InventoryField with an item and an integer for the amount.

public class InventoryField{
    int count;
    Item item;
}

public class Inventory extends ArrayList{
       ...
    }