return obj == null ? null : obj.toString();
String result = null;  if (obj != null) { if (!(obj instanceof Date)) { throw new ConversionException("Expected object of type java.sql.Date, but instead received " + obj.getClass().getName()); } result = obj.toString(); } return result;
    public String convertToString(Object obj, int sqlTypeCode) throws ConversionException    {        return obj == null ? null : obj.toString();    }