Java Utililty Methods Time to String

return timeFormat.format(time);

NumberFormat form = NumberFormat.getInstance();
form.setMinimumIntegerDigits(2);
form.setMinimumFractionDigits(0);
form.setMaximumIntegerDigits(2);
form.setMaximumFractionDigits(2);
double stime = t;
int hours = (int) Math.floor(stime);
stime = (stime - hours) * 60;
...

SimpleDateFormat df = new SimpleDateFormat("yy-MM-dd HH:mm");
Calendar toyear = Calendar.getInstance();
Calendar today = Calendar.getInstance();
toyear.set(Calendar.MONTH, Calendar.JANUARY);
toyear.set(Calendar.DATE, 1);
toyear.set(Calendar.HOUR_OF_DAY, 0);
toyear.set(Calendar.MINUTE, 0);
toyear.set(Calendar.SECOND, 0);
...

if (date1 == null) {
    return date2 == null;
if (date2 == null) {
    return date1 == null;
return timeOnlyFormat.format(date1).equals(timeOnlyFormat.format(date2));

if (_Date == null)
    return "";
SimpleDateFormat _SimpleDateFormat = new SimpleDateFormat("yyyy:MM:dd HH:mm:ss", Locale.SIMPLIFIED_CHINESE);
return _SimpleDateFormat.format(_Date);

return timestampToString(System.currentTimeMillis());

if (Double.isNaN(time)) {
    return "NA";
SimpleDateFormat formatter = new SimpleDateFormat("HH:mm:ss");
formatter.setTimeZone(TimeZone.getTimeZone("GMT"));
long longTime = Math.round(time);
Date date = new Date(longTime);
return formatter.format(date);
...

return timeFormat.format(time(tickNo, offset));

if (time == null) {
    return null;
return new SimpleDateFormat(timeFormat).parse(time);

int diffMinutes = -1;
Calendar now = Calendar.getInstance();
now.setTime(new Date());
SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss");
Date date = null;
try {
    date = dateFormat.parse(startTime);
} catch (ParseException e) {
...