null in arrayList

[puzzlecracker]

What the behavior of adding null to arrayList?
couldnt find it in api.

Thax

 

[Ranganath Kini]

Perhaps you haven't looked close enuf,

"public class ArrayList<E>
extends AbstractList<E>
implements List<E>, RandomAccess, Cloneable, Serializable

Resizable-array implementation of the List interface. Implements all
optional list operations, and permits all elements, including null. "

I found that on the first line of the API documentation.

Hope it helps!