What difference and benefit does an array have against the listarray

• An ArrayList has a dynamic size, while that of an Array is defined in its creation.
• An ArrayList can not contain data Primitives, only Objects.
• The ArrayList allows you to verify that the data that are added to the collection are of the correct type in time of compilation.
• The Array can be of several dimensions, the ArrayList it is one-dimensional (although it can be an ArrayList of ArrayLists).

Hello as they indicate in the previous answer an ArrayList can change size as needed at runtime, the ArrayList Class implements the List interface

List<Integer> lista = new ArrayList<>();

The Integer value between the diamond operator (< >) indicates the type of object to be entered, because if you try to do this: lista.add("1"); will not compile since it asks for an Integer (1,2,3 .. .) and trying to send a String.

Greetings.