Java ZonedDateTime

The Java ZonedDateTime class is an immutable and thread-safe class that represents a date-time with a time-zone. The ZonedDateTime class can be used to store all date and time fields, to a precision of nanoseconds, and a time-zone.

How to use

The ZonedDateTime class can be used to store information like- “22nd April 2019 at 10:30.40.123456789 +02:00 in the Asia/Calcutta time-zone”. Try the following examples to better understand –

Now example

The following example program shows how you can use the ZonedDateTime class to get the current date & time with the time zone.

ZonedDateTimeExample1.javaCopy
import java.time.ZonedDateTime;

public class ZonedDateTimeExample1 {

    public static void main(String[] args) {

        // Get instance of ZonedDateTime
        ZonedDateTime zonedDateTime = ZonedDateTime.now();

        // Print current date & time with zone
        System.out.println(zonedDateTime);

    }
}
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Parsing example

The following example program shows how you can use parse() function to parse zoned date and time string.

ZonedDateTimeExample2.javaCopy
import java.time.ZonedDateTime;

public class ZonedDateTimeExample2 {

    public static void main(String[] args) {

        // Parse zoned date & time from string
        ZonedDateTime zonedDateTime = ZonedDateTime.parse("2019-05-07T14:43:38.848482200+05:30[Asia/Calcutta]");

        // Print the zone
        System.out.println(zonedDateTime.getZone());
    }
}
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Add/Subtract example

The following example program shows how you can use plus/minus function to add or subtract years with ZonedDateTime

ZonedDateTimeExample3.javaCopy
import java.time.ZonedDateTime;

public class ZonedDateTimeExample3 {

    public static void main(String[] args) {

        // Get instance of ZonedDateTime
        ZonedDateTime zonedDateTime = ZonedDateTime.now();
        System.out.println(zonedDateTime);

        // Add 5 years
        zonedDateTime = zonedDateTime.plusYears(5);
        System.out.println(zonedDateTime);

        // Subtract 2 years
        zonedDateTime = zonedDateTime.minusYears(2);
        System.out.println(zonedDateTime);

    }
}
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Format example

The following example program shows how you can use DateTimeFormatter with ZonedDateTime

ZonedDateTimeExample4.javaCopy
import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;

public class ZonedDateTimeExample4 {

    public static void main(String[] args) {

        // Get instance of ZonedDateTime
        ZonedDateTime zonedDateTime = ZonedDateTime.now();

        // Format zonedDateTime, get Local date only
        String format = zonedDateTime.format(DateTimeFormatter.ISO_LOCAL_DATE);
        System.out.println(format);
    }
}
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