Java Instant Calculate restrictToDaytime(Instant instantToRestrict, Instant thresholdTime, ZoneId userZoneId)

Description

restrict To Daytime

License

Open Source License

Declaration

public static Instant restrictToDaytime(Instant instantToRestrict, Instant thresholdTime, ZoneId userZoneId) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.time.*;

public class Main {
    private static final int latestHourForAutomatedMessages = 20;
    private static final int earliestHourForAutomatedMessage = 8;
    private static final LocalTime latestHour = LocalTime.of(latestHourForAutomatedMessages, 0);
    private static final LocalTime earliestHour = LocalTime.of(earliestHourForAutomatedMessage, 0);

    public static Instant restrictToDaytime(Instant instantToRestrict, Instant thresholdTime, ZoneId userZoneId) {
        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;/*from w  w w  .  j  a va 2  s  .  c o  m*/
        } else if (zonedDateTime.getHour() >= latestHourForAutomatedMessages) {
            zonedDateTime = ZonedDateTime.of(zonedDateTime.toLocalDate(), latestHour, userZoneId);
            return zonedDateTime.toInstant();
        } else {
            return instantToRestrict;
        }
    }
}

Related

1. isEqualOrAfterNow(Instant now, Instant instant)
2. maxInstant(Instant v1, Instant v2)
3. nanos(Instant instant)
4. plus(Instant instant, Duration add)
5. plusMilli(Instant _date, long _milli)
6. roundUp(final Instant time, final Duration duration)
7. secondsAgo(Instant end)