Java Utililty Methods Date to Timestamp

return date == null ? null : new Timestamp(date.getTime());

return date == null ? currentTimestamp() : date;

return new Timestamp(date.getTime());

Calendar gregCal = new GregorianCalendar();
gregCal.setTime(date);
gregCal.set(Calendar.HOUR_OF_DAY, 0);
gregCal.set(Calendar.MINUTE, 0);
gregCal.set(Calendar.SECOND, 0);
gregCal.set(Calendar.MILLISECOND, 0);
return new Timestamp(gregCal.getTime().getTime());

return new Timestamp(date.getTime());

return new Timestamp(removeMilis(date).getTime());

if (date == null)
    return null;
Calendar cal = Calendar.getInstance();
cal.setTime(date);
int hour = Integer.parseInt(time.substring(0, 2));
int minute = Integer.parseInt(time.substring(3));
cal.set(Calendar.HOUR, hour);
cal.set(Calendar.MINUTE, minute);
...

try {
    DateFormat dateFormat = SimpleDateFormat.getDateInstance(SimpleDateFormat.SHORT);
    String dateString = dateFormat.format(date);
    return dateFormat.parse(dateString);
} catch (ParseException e) {
    e.printStackTrace();
return null;
...

DecimalFormat format = new DecimalFormat("00");
int month = date.get(Calendar.MONTH) + 1;
int day = date.get(Calendar.DAY_OF_MONTH);
int hour = date.get(Calendar.HOUR_OF_DAY);
int minute = date.get(Calendar.MINUTE);
int second = date.get(Calendar.SECOND);
return "" + date.get(Calendar.YEAR) + format.format(month) + format.format(day) + format.format(hour)
        + format.format(minute) + format.format(second);
...

if (d == null)
    return null;
return dfDateTime_mmddyyyy.format(d);