Long.valueOf does not show zero to the left

I have a problem when making an append to a StringBuilder from a linkedList and display it in the form of long, the code is as follows:

   for (int i=0; i < new_list.size(); i++)
    {
        stb.append(new_list.get(i));
        Log.d("numbers stored", String.valueOf(new_list.get(i)));
    }

    Log.d("each value from", String.valueOf(new_list.toString()));
    Long requestLong = Long.parseInt(stb.toString());
    Log.d("each value from", String.valueOf(requestLong));
    return Long.valueOf(requestLong);

the value of LinkedList results in this:

[0, 8, 4, 6, 8, 9, 7, 0] 

which is the desired but at the time of making the append and using the method of Long.valueOf the result is as follows: 8468970

How can I do to show exactly the value that is stored in LinkedList ?, for your attention, thanks.