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Java Date Time - ZoneOffset.query() Examples

Java Date Time Java Java API 


Class:

java.time.ZoneOffset

java.lang.Objectjava.lang.Objectjava.time.ZoneIdjava.time.ZoneIdjava.io.SerializableSerializablejava.time.ZoneOffsetjava.time.ZoneOffsetjava.time.temporal.TemporalAccessorTemporalAccessorjava.time.temporal.TemporalAdjusterTemporalAdjusterjava.lang.ComparableComparablejava.io.SerializableSerializableLogicBig

Method:

public <R> R query(TemporalQuery<R> query)

Queries this offset using the specified query.


Examples


package com.logicbig.example.zoneoffset;

import java.time.ZoneId;
import java.time.ZoneOffset;
import java.time.temporal.TemporalQueries;

public class QueryExample {

public static void main(String... args) {
ZoneOffset z = ZoneOffset.of("-6");
System.out.println(z);

ZoneId z2 = z.query(TemporalQueries.zone());
System.out.println(z2);

ZoneId z3 = z.query(TemporalQueries.zoneId());
System.out.println(z3);
}
}

Output

-06:00
-06:00
null




package com.logicbig.example.zoneoffset;

import java.time.Instant;
import java.time.ZoneId;
import java.time.ZoneOffset;
import java.time.ZonedDateTime;
import java.time.temporal.ChronoField;
import java.time.temporal.TemporalQuery;
import java.util.ArrayList;
import java.util.List;

public class QueryExample2 {

public static void main(String... args) {

ZoneOffset z = ZonedDateTime.now().getOffset();
System.out.println(z);

List<ZoneId> list = z.query(zonesOfSameOffsets);
list.forEach(System.out::println);
}

static TemporalQuery<List<ZoneId>> zonesOfSameOffsets = temporal -> {
List<ZoneId> zones = new ArrayList<>();
if (temporal.isSupported(ChronoField.OFFSET_SECONDS)) {
ZoneOffset z = ZoneOffset.from(temporal);
for (String s : ZoneOffset.getAvailableZoneIds()) {
ZoneId zid = ZoneId.of(s);
ZoneOffset offset = zid.getRules()
.getOffset(Instant.now());
if (z.compareTo(offset)==0) {
zones.add(zid);
}
}
}
return zones;
};
}

Output

-05:00
America/Panama
America/Chicago
America/Eirunepe
Etc/GMT+5
Pacific/Easter
Mexico/General
America/Porto_Acre
America/Guayaquil
America/Rankin_Inlet
US/Central
America/Rainy_River
America/Indiana/Knox
America/North_Dakota/Beulah
America/Monterrey
America/Jamaica
America/Atikokan
America/Coral_Harbour
America/North_Dakota/Center
America/Cayman
America/Indiana/Tell_City
Chile/EasterIsland
America/Mexico_City
America/Matamoros
CST6CDT
America/Knox_IN
America/Bogota
America/Menominee
America/Resolute
SystemV/EST5
Canada/Central
America/Port-au-Prince
Brazil/Acre
America/Cancun
America/Lima
America/Bahia_Banderas
US/Indiana-Starke
America/Rio_Branco
SystemV/CST6CDT
Jamaica
America/Merida
America/North_Dakota/New_Salem
America/Winnipeg




See Also