Properly removing an Integer from a List

Question

Here\'s a nice pitfall I just encountered. Consider a list of integers:

List list = new ArrayList();
list.add(5);
list.add(6);         


        

Answer 1

list.remove(4) is an exact match of list.remove(int index), so it will be called. If you want to call list.remove(Object) do the following: list.remove((Integer)4).