Java 2D ArrayList and sorting

Question

I need to sort a shopping list by the aisle the item is located for example:
[Bread] [1]
[Milk] [2]
[Cereal] [3]

I am planning to do this with ArrayList and

Answer 1

If you want to sort an ArrayList of ArrayLists then you can use the ColumnComparator.

If you want to sort an ArrayList of your custom Object then you can use the BeanComparator.