Re: Size of an arraylist in bytes

Here is the code:

        ArrayList<Integer> tmp=new ArrayList<Integer>();
        tmp.add(-1);
        tmp.add(-1);
        System.out.println(DiGraph.GetBytes(tmp).length);
        tmp.set(0, 10);
        System.out.println(DiGraph.GetBytes(tmp).length);

    public static byte[] GetBytes(Object v) {
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        ObjectOutputStream oos;
        try {
            oos = new ObjectOutputStream(bos);
            oos.writeObject(v);
            oos.flush();
            oos.close();
            bos.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        byte[] data = bos.toByteArray();
        return data;
    }

The problem is I need to write multiple arraylists on disk and later
on I update the elements of them. I store the starting location of
arraylists and their size such that later I can refer to them. If the
size of objects change then it messes up! Could you please help?
On Nov 20, 1:05 pm, markspace <-@.> wrote: