Java ArrayList copy

Question

I have an ArrayList l1 of size 10. I assign l1 to new list reference type l2. Will l1 and l2 po

Answer 1

Yes, assignment will just copy the value of l1 (which is a reference) to l2. They will both refer to the same object.

Creating a shallow copy is pretty easy though:

List newList = new ArrayList<>(oldList);

(Just as one example.)