create(size, obj); return true;
if (index < 0 || index > size) { throw new IndexOutOfBoundsException ("size=" + index + "; index=" + index); }  Object obj = element; for (int ii=index; ii<size; ii++) { obj = set(ii, obj); } append(size, obj);
    public boolean add(Object obj) {        lock();        int size = size();        create(size, obj);        return true;    }