Java Utililty Methods Date Adjust

java.util.Date adjustDate(Date dtDate, int iYears, int iMonths, int iDays, int iHours, int iMinutes, int iSeconds)
Adjusts the Date passed in by the appropriate amounts.

if (dtDate == null)
 return null;
Calendar cal = Calendar.getInstance();
Calendar calNew = Calendar.getInstance();
cal.setTime(dtDate);
calNew.setTime(dtDate);
calNew.set(cal.get(Calendar.YEAR) + iYears, cal.get(Calendar.MONTH) + iMonths,
 cal.get(Calendar.DAY_OF_MONTH) + iDays, cal.get(Calendar.HOUR_OF_DAY) + iHours,
...

Date adjustDays(Date startingDate, int deltaDays)
Takes a Date and moves in the desired amount of days.

Calendar cal = Calendar.getInstance();
cal.setTime(startingDate);
cal.add(Calendar.DATE, deltaDays);
return cal.getTime();

Date adjustHour(Date dt, int hour)
adjust Hour

Calendar cal = Calendar.getInstance();
cal.setTime(dt);
cal.add(Calendar.HOUR, hour);
return cal.getTime();

Date adjustHourAndMinute(Date n)
adjust Hour And Minute

if (n == null)
 n = new Date();
Calendar cal = Calendar.getInstance();
int hour = cal.get(Calendar.HOUR_OF_DAY);
int minutes = cal.get(Calendar.MINUTE);
cal.setTime(n);
cal.set(Calendar.MINUTE, minutes);
cal.set(Calendar.HOUR_OF_DAY, hour);
...

Date adjustTime(Date date, int hour, int minute, int second)
adjust Time

Calendar c = Calendar.getInstance();
c.setTime(date);
c.add(Calendar.HOUR, hour);
c.add(Calendar.MINUTE, minute);
c.add(Calendar.SECOND, second);
return c.getTime();

void adjustToDayStartAndEnd(Date from, Date to)
Set a period to day start and end.

adjustToDayStart(from);
adjustToDayEnd(to);

Date getAdjustDayResetTime(Date date, int adjustAmount)
get Adjust Day Reset Time

if (date == null) {
 return null;
Calendar cal = Calendar.getInstance();
cal.setTime(date);
cal.set(Calendar.HOUR_OF_DAY, 0);
cal.set(Calendar.MINUTE, 0);
cal.set(Calendar.SECOND, 0);
...

Date getAdjustedDate(Date original, int millisecondAdjustment)
get Adjusted Date

Date result = null;
if (original != null) {
 Calendar cal = Calendar.getInstance();
 cal.setTime(original);
 cal.add(Calendar.MILLISECOND, millisecondAdjustment);
 result = cal.getTime();
return result;
...

Date getTimeWithAdjustment(Date date, boolean carryover)
get Time With Adjustment

Calendar cal = Calendar.getInstance();
if (date != null) {
 cal.setTime(date);
if (carryover) {
 cal.add(Calendar.DAY_OF_YEAR, 1);
return cal.getTime();
...