Calendar setTimeZone() Method in Java with Examples

The setTimeZone(TimeZone time_zone) method in Calendar class takes a Time Zone value as a parameter and modifies or set the timezone represented by this Calendar.

Syntax:

public void setTimeZone(TimeZone time_zone)

Parameters: The method takes one parameter time_zone of Date type and refers to the given date that is to be set.



Return Value: The method does not return any value.

Below programs illustrate the working of setTimeZone() Method of Calendar class:
Example 1:

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// Java code to illustrate
// setTime() method
  
import java.util.*;
  
public class Calendar_Demo {
    public static void main(String[] args)
    {
  
        // Creating calendar object
        Calendar calndr = Calendar.getInstance();
  
        // Displaying the current time zone
        String tz_name = calndr.getTimeZone()
                             .getDisplayName();
  
        System.out.println("The Current Time"
                           + " Zone: " + tz_name);
  
        TimeZone time_zone
            = TimeZone.getTimeZone("GMT");
  
        // Modifying the time zone
        calndr.setTimeZone(time_zone);
  
        // Displaying the modified zone
        System.out.println("Modified Zone: "
                           + calndr.getTimeZone()
                                 .getDisplayName());
    }
}

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Output:

The Current Time Zone: Coordinated Universal Time
Modified Zone: Greenwich Mean Time

Example 2:

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// Java code to illustrate
// setTimeZone() method
  
import java.util.*;
  
public class Calendar_Demo {
    public static void main(String[] args)
    {
  
        // Creating calendar object
        Calendar calndr = Calendar.getInstance();
  
        // Displaying the current time zone
        String tz_name = calndr.getTimeZone()
                             .getDisplayName();
  
        System.out.println("The Current Time"
                           + " Zone: " + tz_name);
  
        TimeZone time_zone
            = TimeZone.getTimeZone("Pacific/Tahiti");
  
        // Modifying the time zone
        calndr.setTimeZone(time_zone);
  
        // Displaying the modified zone
        System.out.println("Modified Zone: "
                           + calndr.getTimeZone()
                                 .getDisplayName());
    }
}

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Output:

The Current Time Zone: Coordinated Universal Time
Modified Zone: Tahiti Time

Reference: https://docs.oracle.com/javase/7/docs/api/java/util/Calendar.html#setTimeZone(java.util.TimeZone)



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