/**
* {@inheritDoc}
*
* <p>This implementation gets an iterator over the specified collection and iterates over it,
* inserting the elements obtained from the iterator into this list at the appropriate position,
* one at a time, using {@code add(int, E)}. Many implementations will override this method for
* efficiency.
*
* <p>Note that this implementation throws an {@code UnsupportedOperationException} unless {@link
* #add(int, Object) add(int, E)} is overridden.
*
* @throws UnsupportedOperationException {@inheritDoc}
* @throws ClassCastException {@inheritDoc}
* @throws NullPointerException {@inheritDoc}
* @throws IllegalArgumentException {@inheritDoc}
* @throws IndexOutOfBoundsException {@inheritDoc}
*/
public boolean addAll(int index, Collection<? extends E> c) {
boolean modified = false;
Iterator<? extends E> e = c.iterator();
while (e.hasNext()) {
add(index++, e.next());
modified = true;
}
return modified;
}
public boolean addAll(int index, Collection<? extends E> c) {
if (index < 0 || index > size)
throw new IndexOutOfBoundsException("Index: " + index + ", Size: " + size);
int cSize = c.size();
if (cSize == 0) return false;
checkForComodification();
l.addAll(offset + index, c);
expectedModCount = l.modCount;
size += cSize;
modCount++;
return true;
}