ZoneOffset
Description
ZoneOffset represents a fixed zone offset from UTC time zone.
ZoneOffset doesn't track the changes in zone offset caused by
the Daylight Saving Time.
The ZoneOffset class declares three constants:
- UTC
- MAX
- MIN
UTC is the time zone offset constant for UTC.
MAX and MIN are the maximum and minimum supported zone offsets.
Z is used as the zone offset designator for UtC time zone.
Example
We can create ZoneOffset with a combination of hour, minute, and second.
import java.time.ZoneOffset;
//from ww w . j a v a 2s. co m
public class Main {
public static void main(String[] args) {
ZoneOffset zoneOffset1 = ZoneOffset.ofHours(-1);
System.out.println(zoneOffset1);
ZoneOffset zoneOffset2 = ZoneOffset.ofHoursMinutes(6, 30);
System.out.println(zoneOffset2);
ZoneOffset zoneOffset3 = ZoneOffset.ofHoursMinutesSeconds(9, 30, 45);
System.out.println(zoneOffset3);
}
}
The code above generates the following result.
Example 2
The following code shows how to create zone offset from offset.
import java.time.ZoneOffset;
/*from w w w . j ava2 s.c o m*/
public class Main {
public static void main(String[] args) {
ZoneOffset zoneOffset1 = ZoneOffset.of("+05:00");
ZoneOffset zoneOffset2 = ZoneOffset.of("Z"); // Same as ZoneOffset.UTC
System.out.println(zoneOffset1);
System.out.println(zoneOffset2);
}
}
The code above generates the following result.
Example 3
The following code outputs the constant values from ZoneOffset.
import java.time.ZoneOffset;
// w ww . j ava2 s . com
public class Main {
public static void main(String[] args) {
System.out.println("ZoneOffset.UTC: " + ZoneOffset.UTC);
System.out.println("ZoneOffset.MIN: " + ZoneOffset.MIN);
System.out.println("ZoneOffset.MAX: " + ZoneOffset.MAX);
}
}
The code above generates the following result.
Note
Java Date-Time API supports zone offsets in hours and minutes, and seconds.
compareTo() from ZoneOffset
allows us to compare two zone offsets.
A zone offset of +1:30 is before a zone offset of +1:00.
Java Date-Time API supports zone offsets between -18:00 to +18:00.