/** * Returns a copy of this deque. * * @return a copy of this deque */ public ArrayDeque<E> clone() { try { @SuppressWarnings("unchecked") ArrayDeque<E> result = (ArrayDeque<E>) super.clone(); result.elements = Arrays.copyOf(elements, elements.length); return result; } catch (CloneNotSupportedException e) { throw new AssertionError(); } }