How do I remove sequential elements from a Java ArrayList?

Question

I'm a relatively new Java programmer and I'm having difficuly removing more than one element from an ArrayList. Ideally I'd like to do something like this:

ArrayList ar1 = new ArrayList();
ar1.add(...)
ar1.add(...)
ar1.add(...)
ar1.add(...)

for (int i = 0; i < 2; i++){
     ar1.remove(i);
}

I think iterator might help, but I can't find an example that matches close enough to what I'm trying to do. Any help would be appreciated. Thanks.

Answer 1

Here's what you want to do:

ar1.subList(0, 2).clear();

This creates a sublist view of the first 2 elements of the list and then clears that sublist, removing them from the original list. The subList method exists primarily for this sort of thing... doing operations on a specific range of the list.