Java Utililty Methods Date Format

if (date == null) {
    return "";
return new SimpleDateFormat(DEFAULT_DATE_FORMAT).format(date);

DateFormat dateFormat = DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.MEDIUM);
if (dateFormat instanceof SimpleDateFormat) {
    SimpleDateFormat sdf = (SimpleDateFormat) dateFormat;
    sdf.applyPattern(sdf.toPattern().replaceAll("y+", "yyyy").concat(" z"));
return dateFormat.format(date);

if (date == null || date.getTime() == 0) {
    return null;
return ISO8601_FORMAT_OUT.format(date);

return dateTimeToStr(date, DATE_TIME_FORMAT_YYYY_MM_DD_HH_MI_SS);

SimpleDateFormat formatter = new SimpleDateFormat(XML_DATE_FORMAT);
return formatter.format(date);

SimpleDateFormat formatter = new SimpleDateFormat("yyyyMMdd");
String strDate = formatter.format(date);
return strDate;

return format(date, "yyyy-MM-dd");

String d = dateFormatMil.format(date);
d = d.substring(0, d.length() - 2) + ":" + d.substring(d.length() - 2);
return d;

return date != null ? createDateFormat().format(date) : null;

return THREAD_LOCAL_FORMAT.get().format(date);