The setTimeInMillis(long mill_sec) method in Calendar class is used to set Calendars time represented by this Calendar from the passed long value.
Syntax:
public void setTimeInMillis(long mill_sec)
Parameters: The method takes one parameter mill_sec of long datat-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 setTimeInMillis() Method of Calendar class:
Example 1:
// Java code to illustrate// setTimeInMillis() method  import java.util.*;  public class Calendar_Demo {    public static void main(String args[])    {          // Creating calendar object        Calendar calndr = Calendar.getInstance();          // Getting the time in milliseconds        System.out.println("The Current"                           + " Time is: "                           + calndr.getTime());          // Changing time to 2000 milli-second        calndr.setTimeInMillis(2000);          // Displaying the new time        System.out.println("After setting"                           + " Time: "                           + calndr.getTime());    }} |
Output:
The Current Time is: Fri Feb 22 08:00:54 UTC 2019 After setting Time: Thu Jan 01 00:00:02 UTC 1970
Example 2:
// Java code to illustrate// setTimeInMillis() method  import java.util.*;  public class Calendar_Demo {    public static void main(String args[])    {          // Creating calendar object        Calendar calndr = Calendar.getInstance();          // Getting the time in milliseconds        System.out.println("The Current"                           + " Time is: "                           + calndr.getTime());          // Changing time to 8000 milli-second        calndr.setTimeInMillis(8000);          // Displaying the new time        System.out.println("After setting"                           + " Time: "                           + calndr.getTime());    }} |
Output:
The Current Time is: Fri Feb 22 08:01:02 UTC 2019 After setting Time: Thu Jan 01 00:00:08 UTC 1970
Reference: https://docs.oracle.com/javase/7/docs/api/java/util/Calendar.html#setTimeInMillis(long)
