The clear() method in Calendar class is used to clone a calendar object. It basically creates a shallow copy of this object.
Syntax:
public Object clone()
Parameters: The method does not take any parameters.
Return Value: The method does not return any value.
Below programs illustrate the working of clone() Method of Calendar class:
Example 1:
// Java Code to illustrate clone() Method  import java.util.Calendar;  public class CalendarClassDemo {    public static void main(String args[])    {        // Creating a calendar object        Calendar calndr1 = Calendar.getInstance();          // Displaying current calendar        System.out.println("Original calendar: "                           + calndr1.getTime());          // Cloning the original        Calendar calndr2 = (Calendar)calndr1.clone();          // Displaying the Copy        System.out.println("Cloned calendar: "                           + calndr2.getTime());    }} |
Output:
Original calendar: Tue Feb 12 11:41:36 UTC 2019 Cloned calendar: Tue Feb 12 11:41:36 UTC 2019
Example 2:
// Java Code to illustrate clone() Method  import java.util.*;  public class CalendarClassDemo {    public static void main(String args[])    {        // Creating a calendar object        Calendar calndr1            = new GregorianCalendar(2018, 12, 2);          // Displaying current calendar        System.out.println("Original calendar: "                           + calndr1.getTime());          // Cloning the original        Calendar calndr2 = (Calendar)calndr1.clone();          // Displaying the Copy        System.out.println("Cloned calendar: "                           + calndr2.getTime());    }} |
Output:
Original calendar: Wed Jan 02 00:00:00 UTC 2019 Cloned calendar: Wed Jan 02 00:00:00 UTC 2019
Reference: https://docs.oracle.com/javase/7/docs/api/java/util/Calendar.html#clone()
