Java Utililty Methods Calendar Time

List of utility methods to do Calendar Time

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Description

The list of methods to do Calendar Time are organized into topic(s).

Method

voidclearTime(final Calendar c)
Set Calendar#HOUR_OF_DAY , Calendar#MINUTE , Calendar#SECOND and Calendar#MILLISECOND to 0. 
if (c != null) {
    c.set(Calendar.HOUR_OF_DAY, 0);
    c.set(Calendar.MINUTE, 0);
    c.set(Calendar.SECOND, 0);
    c.set(Calendar.MILLISECOND, 0);
voidclearTimeFields(final Calendar calendar)
Clears all the time fields in Calendar object. 
calendar.set(Calendar.HOUR, 0);
calendar.set(Calendar.HOUR_OF_DAY, 0);
calendar.set(Calendar.MINUTE, 0);
calendar.set(Calendar.SECOND, 0);
calendar.set(Calendar.MILLISECOND, 0);
voidclearTimeFields(Set c)
Clears the date fields on the specified calendar collection. 
for (Calendar cal : c) {
    clearTimeFields(cal);
CalendarclearTimeFromCalendar(Calendar calendar)
clear Time From Calendar 
if (calendar != null) {
    calendar.set(Calendar.HOUR, 0);
    calendar.clear(Calendar.AM_PM); 
    calendar.set(Calendar.HOUR_OF_DAY, 0);
    calendar.set(Calendar.MINUTE, 0);
    calendar.set(Calendar.SECOND, 0);
    calendar.set(Calendar.MILLISECOND, 0);
    calendar.clear(Calendar.DST_OFFSET);
...
intcompareTimeOnly(Calendar cal1, Calendar cal2)
compare Time Only 
cal2.set(Calendar.YEAR, cal1.get(Calendar.YEAR));
cal2.set(Calendar.MONTH, cal1.get(Calendar.MONTH));
cal2.set(Calendar.DATE, cal1.get(Calendar.DATE));
return cal1.compareTo(cal2);
CalendarconvertCalendar(final Calendar calendar, final TimeZone timeZone)
Adapt calendar to client time zone. 
Calendar ret = new GregorianCalendar(timeZone);
ret.setTimeInMillis(calendar.getTimeInMillis() + timeZone.getOffset(calendar.getTimeInMillis())
        - TimeZone.getDefault().getOffset(calendar.getTimeInMillis()));
ret.getTime();
return ret;
longconvertTimeToLocalTimezone(Long pTime, Calendar pTargetCal)
convert Time To Local Timezone 
gmtCalendar.setTimeInMillis(pTime);
pTargetCal.set(Calendar.YEAR, gmtCalendar.get(Calendar.YEAR));
pTargetCal.set(Calendar.MONTH, gmtCalendar.get(Calendar.MONTH));
pTargetCal.set(Calendar.DAY_OF_MONTH, gmtCalendar.get(Calendar.DAY_OF_MONTH));
pTargetCal.set(Calendar.HOUR_OF_DAY, gmtCalendar.get(Calendar.HOUR_OF_DAY));
pTargetCal.set(Calendar.MINUTE, gmtCalendar.get(Calendar.MINUTE));
pTargetCal.set(Calendar.SECOND, gmtCalendar.get(Calendar.SECOND));
pTargetCal.set(Calendar.MILLISECOND, gmtCalendar.get(Calendar.MILLISECOND));
...
StringconvertTimeToString(Calendar time)
Converts time as Calendar in the string format 'hh:mm:ss'. 
String timeText = "";
int hour = time.get(Calendar.HOUR_OF_DAY);
if (hour < 10) {
    timeText += "0";
timeText += hour + ":";
int minute = time.get(Calendar.MINUTE);
if (minute < 10) {
...
longconvertToActiveDirectoryTime(Calendar calendar)
Converts the given calendar to the equivalent Active Directory time. 
return ((calendar.getTime().getTime() * 10000L) + 116444736000000000L);
CalendarconvertToCalendar(long adTimeValue)
Converts the given Active Directory time value to an equivalent calendar. 
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis((adTimeValue - 116444736000000000L) / 10000L);
return calendar;