SubList(AbstractList<E> list, int fromIndex, int toIndex) {
if (fromIndex < 0) throw new IndexOutOfBoundsException("fromIndex = " + fromIndex);
if (toIndex > list.size()) throw new IndexOutOfBoundsException("toIndex = " + toIndex);
if (fromIndex > toIndex)
throw new IllegalArgumentException("fromIndex(" + fromIndex + ") > toIndex(" + toIndex + ")");
l = list;
offset = fromIndex;
size = toIndex - fromIndex;
expectedModCount = l.modCount;
}
