The computeTime() method in Calendar class is used for the conversion operation of the current calendar field values in fields[] to the millisecond time value time.
Syntax:
protected abstract void computeTime()
Parameters: The method does not take any parameters.
Return Value: The method does not return any value.
Below programs illustrate the working of computeTime() Method of Calendar class:
Example 1:
// Java Code to illustrate// computeTime() Method  import java.util.*;  public class CalendarClassDemo    extends GregorianCalendar {    public static void main(String args[])    {        // Creating calendar object        CalendarClassDemo calndr = new CalendarClassDemo();          // Displaying the current date        System.out.println("The Current "                           + "date is: " + calndr.getTime());          // Clearing the calendar        calndr.clear();          // Set a new year and call        // computeTime()        calndr.set(GregorianCalendar.YEAR, 2016);        calndr.computeTime();          // Displaying the current date        System.out.println("The recent"                           + " date is: " + calndr.getTime());    }} |
Output:
The Current date is: Wed Feb 13 16:27:12 UTC 2019 The recent date is: Fri Jan 01 00:00:00 UTC 2016
Example 2:
// Java Code to illustrate// computeTime() Method  import java.util.*;  public class CalendarClassDemo    extends GregorianCalendar {    public static void main(String args[])    {        // Creating calendar object        CalendarClassDemo calndr = new CalendarClassDemo();          // Displaying the current date        System.out.println("The Current "                           + "date is: " + calndr.getTime());          // Clearing the calendar        calndr.clear();          // Set a new year and call        // computeTime()        calndr.set(GregorianCalendar.YEAR, 2000);        calndr.computeTime();          // Displaying the current date        System.out.println("The recent"                           + " date is: " + calndr.getTime());    }} |
Output:
The Current date is: Wed Feb 13 16:27:15 UTC 2019 The recent date is: Sat Jan 01 00:00:00 UTC 2000
Reference: https://docs.oracle.com/javase/7/docs/api/java/util/Calendar.html#computeTime()
