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Calendar complete() Method in Java with Examples

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The complete() method in Calendar class is used to fill any unset fields of the calendar fields. It follows the following process of completion:
  1. At first, if the time value has not been calculated, the computeTime() method is called to calculate it from calendar field values.
  2. Second, to calculate all the calendar field values the computeFields() method is used.
Syntax:
protected void complete()
Parameters: The method does not take any parameters. Return Value: The method does not return any value. Below programs illustrate the working of complete() Method of Calendar class: Example 1:
// Java Code to illustrate
// complete() 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
        // complete()
        calndr.set(GregorianCalendar.YEAR, 2008);
        calndr.complete();
  
        // Displaying the current date
        System.out.println("The new"
                           + " date is: " + calndr.getTime());
    }
}

                    
Output:
The Current date is: Wed Feb 13 15:39:33 UTC 2019
The new date is: Tue Jan 01 00:00:00 UTC 2008
Example 2:
// Java Code to illustrate
// complete() 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
        // complete()
        calndr.set(GregorianCalendar.YEAR, 1996);
        calndr.complete();
  
        // Displaying the current date
        System.out.println("The new"
                           + " date is: " + calndr.getTime());
    }
}

                    
Output:
The Current date is: Wed Feb 13 15:39:36 UTC 2019
The new date is: Mon Jan 01 00:00:00 UTC 1996
Reference: https://docs.oracle.com/javase/7/docs/api/java/util/Calendar.html#complete()

Last Updated : 14 Feb, 2019
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