ZonedDateTime now() Method in Java with Examples

In ZonedDateTime class, there are three types of now() method depending upon the parameters passed to it.

now()

now() method of a ZonedDateTime class used to obtain the current date-time from the system clock in the default time-zone.This method will return ZonedDateTime based on system clock with default time-zone to obtain the current date-time. The zone and offset will be set based on the time-zone in the clock.

Syntax:



public static ZonedDateTime now()

Parameters: This method accepts no parameter.

Return value: This method returns the current date-time using the system clock.

Below programs illustrate the now() method:
Program 1:

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// Java program to demonstrate
// ZonedDateTime.now() method
  
import java.time.*;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // create an ZonedDateTime object
        ZonedDateTime lt
            = ZonedDateTime.now();
  
        // print result
        System.out.println("ZonedDateTime : "
                           + lt);
    }
}

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Output:

ZonedDateTime : 2019-01-21T05:36:18.973Z[Etc/UTC]

now(Clock clock)

now(Clock clock) method of a ZonedDateTime class used to return the current date-time based on the specified clock passed as parameter.The zone and offset will be set based on the time-zone in the clock.

Syntax:

public static ZonedDateTime now(Clock clock)

Parameters: This method accepts clock as parameter which is the clock to use.

Return value: This method returns the current date-time.

Below programs illustrate the now() method:
Program 1:

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// Java program to demonstrate
// ZonedDateTime.now() method
  
import java.time.*;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // create a clock
        Clock cl = Clock.systemUTC();
  
        // create an ZonedDateTime object using now(Clock)
        ZonedDateTime lt
            = ZonedDateTime.now(cl);
  
        // print result
        System.out.println("ZonedDateTime : "
                           + lt);
    }
}

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Output:



ZonedDateTime : 2019-01-21T05:36:25.966Z

now(ZoneId zone)

now(ZoneId zone) method of a ZonedDateTime class used to return the current date-time from system clock in the specified time-zone passed as parameter.Specifying the time-zone avoids dependence on the default time-zone. The offset will be calculated from the specified time-zone.

Syntax:

public static ZonedDateTime now(ZoneId zone)

Parameters: This method accepts zone as parameter which is the zone to use.

Return value: This method returns the current date-time.

Below programs illustrate the now() method:
Program 1:

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link
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code

// Java program to demonstrate
// ZonedDateTime.now() method
  
import java.time.*;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // create a clock
        ZoneId zid = ZoneId.of("Europe/Paris");
  
        // create an ZonedDateTime object using now(zoneId)
        ZonedDateTime lt
            = ZonedDateTime.now(zid);
  
        // print result
        System.out.println("ZonedDateTime : "
                           + lt);
    }
}

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Output:

ZonedDateTime : 2019-01-21T06:36:30.188+01:00[Europe/Paris]

References:
https://docs.oracle.com/javase/10/docs/api/java/time/ZonedDateTime.html#now()
https://docs.oracle.com/javase/10/docs/api/java/time/ZonedDateTime.html#now(java.time.Clock)
https://docs.oracle.com/javase/10/docs/api/java/time/ZonedDateTime.html#now(java.time.ZoneId)

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