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ZoneOffset systemDefault() method in Java with Examples

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The systemDefault() method of the ZoneOffset class in Java is used to return the system default time-zone.

Syntax:

public String systemDefault()

Parameters: This method does not accepts any parameters.

Return Value: This method returns the system default time-zone.

Exceptions: This method throws following exception:

  • DateTimeException – It throws this exception if the converted zone ID has an invalid format.
  • ZoneRulesException – It throws this exception if the converted zone region ID cannot be found.

Below programs illustrate the systemDefault() method:

Program 1:




// Java program to demonstrate
// ZoneOffset.systemDefault() method
  
import java.time.*;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // create ZoneId object
        ZoneId zoneId
            = ZoneId.systemDefault();
  
        // printresult
        System.out.println("System Default time-zone: "
                           + zoneId);
    }
}


Output:

System Default time-zone: Etc/UTC

Program 2:




// Java program to demonstrate
// ZoneOffset.systemDefault() method
  
import java.time.*;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // create ZoneId object
        ZoneId zoneId
            = ZoneId.systemDefault();
  
        if (zoneId.getId().equals("Etc/UTC"))
            System.out.println("This zone is Etc/UTC");
        else
            System.out.println("This zone is not Etc/UTC");
    }
}


Output:

This zone is Etc/UTC

Reference: Oracle Doc



Last Updated : 13 Dec, 2018
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