The setTimeZone() method in DateFormat class is used to set the time-zone of the calendar of this DateFormat.
Syntax:
public void setTimeZone(TimeZone time_zone)
Parameters: The method takes one parameter time_zone of TimeZone type and refers to the new time zone.
Return Value: The method does not return any value.
Below programs illustrate the working of setTimeZone() Method of DateFormat class:
Example 1:
// Java code to illustrate// getTimeZone() method  import java.text.*;import java.util.*;  public class DateFormat_Demo {    public static void main(String[] argv)    {        // Initializing the first formatter        DateFormat DFormat            = DateFormat.getDateInstance();          // Converting the dateformat to string        String str = DFormat.format(new Date());          // Original TimeZone        System.out.println(            "The original timezone is: "            + DFormat.getTimeZone()                  .getDisplayName());          TimeZone time_zone            = TimeZone.getTimeZone("GMT");          // Modifying the time zone        DFormat.setTimeZone(time_zone);          // Getting the modified timezones        System.out.println(            "New TimeZone is: "            + DFormat.getTimeZone()                  .getDisplayName());    }} |
Output:
The original timezone is: Coordinated Universal Time New TimeZone is: Greenwich Mean Time
Example 2:
// Java code to illustrate// getTimeZone() method  import java.text.*;import java.util.*;  public class DateFormat_Demo {    public static void main(String[] argv)    {        // Initializing the first formatter        DateFormat DFormat            = DateFormat.getDateInstance();          // Converting the dateformat to string        String str = DFormat.format(new Date());          // Original TimeZone        System.out.println(            "The original timezone is: "            + DFormat.getTimeZone()                  .getDisplayName());          TimeZone time_zone            = TimeZone.getTimeZone("Pacific/Tahiti");          // Modifying the time zone        DFormat.setTimeZone(time_zone);          // Getting the modified timezones        System.out.println(            "New TimeZone is: "            + DFormat.getTimeZone()                  .getDisplayName());    }} |
Output:
The original timezone is: Coordinated Universal Time New TimeZone is: Tahiti Time
Reference: https://docs.oracle.com/javase/7/docs/api/java/text/DateFormat.html#setTimeZone(java.util.TimeZone)
