code: public void readObject (ObjectInputStream in)
          throws IOException, ClassNotFoundException
      {
          _size = in.readInt();
          _values = new int[Math.max(_size, DEFAULT_CAPACITY)];
          for (int ii = 0; ii < _size; ii++) {
              _values[ii] = in.readInt();
          }
      }
docs: Reads our custom streamable fields.