Java Utililty Methods Date Add

List of utility methods to do Date Add

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Description

The list of methods to do Date Add are organized into topic(s).

Method

Dateadd(Date date, long minutes)
add 
if (date == null) {
    throw new IllegalArgumentException();
return addMinutes(date, minutes);
Dateadd(Date eredeti, int mihez, int mennyit)
add 
if (eredeti == null) {
    return null;
Calendar cal = new GregorianCalendar();
cal.setTime(eredeti);
cal.add(mihez, mennyit);
return cal.getTime();
Dateadd(Date when, int amount, int field)
Add an offset to a particular day 
Calendar calendar = GregorianCalendar.getInstance(TimeZone.getTimeZone("UTC"));
calendar.setTime(when);
calendar.add(field, amount);
return calendar.getTime();
Dateadd(int datePart, int detal, Date date)
add 
Calendar c = Calendar.getInstance();
if (date != null)
    c.setTime(date);
c.add(datePart, detal);
return c.getTime();
Dateadd(int field, int value, Date fromDate)
add 
fromDate = (fromDate == null) ? new Date() : fromDate;
Calendar cal = Calendar.getInstance();
cal.setTime(fromDate);
cal.add(field, value);
return cal.getTime();
longadd(long date, int field, int amount)
add 
Calendar cal = GregorianCalendar.getInstance();
cal.setTime(new Date(date));
cal.add(field, amount);
return cal.getTime().getTime();
Dateadd30Minutes(Date date)
add Minutes 
Calendar currentDate = Calendar.getInstance();
currentDate.setTime(date);
int hour = currentDate.get(Calendar.HOUR_OF_DAY);
int minute = currentDate.get(Calendar.MINUTE);
int addHour = (minute + 30) / 60;
minute = (minute + 30) % 60;
hour = hour + addHour;
currentDate.set(Calendar.HOUR_OF_DAY, hour);
...
java.util.DateaddCertainTime(java.util.Date date, double hours)
add Certain Time 
int s = (int) (hours * 60 * 60);
int hour = s / 3600;
int min = (s - hour * 3600) / 60;
int sec = s - hour * 3600 - min * 60;
java.util.Calendar cal = Calendar.getInstance();
cal.setTime(date);
cal.add(Calendar.HOUR, hour);
cal.add(Calendar.MINUTE, min);
...
StringaddDate(Date date, int add)
add Date 
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
calendar.add(Calendar.MONTH, add);
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
return formatter.format(calendar.getTime());
DateaddDate(Date date, int amount, int type)
add Date 
cal.setTime(date);
switch (type) {
case Calendar.DATE:
    cal.add(Calendar.DATE, amount);
return cal.getTime();