if (serialVersionOnStream < 2) locale = Locale.getDefault();  serialVersionOnStream = 2;
  private void readObject(ObjectInputStream stream)    throws IOException, ClassNotFoundException  {    stream.defaultReadObject();    if (serialVersionOnStream < 1)      {        monetarySeparator = decimalSeparator;	exponential = 'E';	serialVersionOnStream = 1;      }  }