Java Utililty Methods Instant Calculate

List of utility methods to do Instant Calculate

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Description

The list of methods to do Instant Calculate are organized into topic(s).

Method

Instantplus(Instant instant, Duration add)
plus 
if (isInfFuture(instant)) {
    return INF_FUTURE;
} else if (isInfPast(instant)) {
    return INF_PAST;
} else if (isInfPositive(add)) {
    return INF_FUTURE;
} else if (isInfNegative(add)) {
    return INF_PAST;
...
InstantplusMilli(Instant _date, long _milli)
Add _milli milliseconds to _date 
return _date.plus(_milli, ChronoField.MILLI_OF_DAY.getBaseUnit());
InstantrestrictToDaytime(Instant instantToRestrict, Instant thresholdTime, ZoneId userZoneId)
restrict To Daytime 
ZonedDateTime zonedDateTime = instantToRestrict.atZone(userZoneId);
if (zonedDateTime.getHour() <= earliestHourForAutomatedMessage) {
    zonedDateTime = ZonedDateTime.of(zonedDateTime.toLocalDate(), earliestHour, userZoneId);
    return thresholdTime == null || zonedDateTime.toInstant().isBefore(thresholdTime)
            ? zonedDateTime.toInstant()
            : thresholdTime;
} else if (zonedDateTime.getHour() >= latestHourForAutomatedMessages) {
    zonedDateTime = ZonedDateTime.of(zonedDateTime.toLocalDate(), latestHour, userZoneId);
...
InstantroundUp(final Instant time, final Duration duration)
Round time to next multiple of given duration 
return roundUp(time, duration.getSeconds());
longsecondsAgo(Instant end)
seconds Ago 
return Duration.between(Instant.EPOCH, end).getSeconds();