Enissay

private String tryParse(String rd) {
    SimpleDateFormat sdfRD = null;
    Date d = null;

    // 4 Nov, 2014
    // Nov, 2014
    String[] oldFormatString = {"dd MMM, yyyy", "MMM, yyyy"};   // Multiple possible formats
    String newFormatString = "yyyy-MM-dd";

    for (String formatString : oldFormatString) {
        try {
            sdfRD = new SimpleDateFormat(formatString, new Locale("us", "US"));
            d = sdfRD.parse(rd);
        }
        catch (ParseException e) {
            sdfRD = null;
            d = null;
        }

        sdfRD.applyPattern(newFormatString);
        return(sdfRD.format(d));
    }

    return null;
}