List.remove() is behaving differently for negative values

I have a requirement in our code, where we need to catch ArrayIndexOutOfBoundsException and move forward with other elements.

However, when i try to do that i am getting ConcurrentModificationException

Following code is something that i want but it is throwing ConcurrentModificationException exception at line #1

Note that list.remove(1000) is not causing any issue but list.remove(-1) does

public class Test1 {
        public static void main(String[] argv) {
            test(new ArrayList<>());
        }

        public static void test(List<Integer> list) {
            list.add(42);
            Iterator<Integer> it = list.iterator();

            try {
                list.remove(-1);
            } catch (Exception e) {
                System.out.println(e);
            }

            try {
                if (it.next() != 42);//Line #1
            } catch (Exception e) {
                System.out.println(e);
            }
        }
    }

Can some one help me understand this behavior and how can I fix this problem ?