Date clone() method in Java with Examples

The clone() method of Date class in Java returns the duplicate of the passed Date object. This duplicate is just a shallow copy of the given Date object.
Syntax:

public Object clone()

Parameters: The method does not accept any parameters.
Return Value: The method returns a clone of the object.
Below programs illustrate the use of clone() Method:
Example 1:

Java

// Java code to demonstrate
// clone() method of Date class

import java.util.Date;
import java.util.Calendar;

public class GfG {
    public static void main(String args[])
    {

        // Creating a Calendar object
        Calendar c1 = Calendar.getInstance();

        // Set Month
        // MONTH starts with 0 i.e. ( 0 - Jan)
        c1.set(Calendar.MONTH, 11);

        // Set Date
        c1.set(Calendar.DATE, 05);

        // Set Year
        c1.set(Calendar.YEAR, 1996);

        // Creating a date object
        // with specified time.
        Date dateOne = c1.getTime();

        Object dateTwo = dateOne.clone();

        System.out.println("Original Date: "
                           + dateOne.toString());
        System.out.println("Cloned Date: "
                           + dateTwo.toString());
    }
}

Output:

Original Date: Thu Dec 05 05:39:04 UTC 1996
Cloned Date: Thu Dec 05 05:39:04 UTC 1996

Example 2:

Java

// Java code to demonstrate
// clone() method of Date class

import java.util.Date;
import java.util.Calendar;

public class GfG {
    public static void main(String args[])
    {

        // Creating a Calendar object
        Calendar c1 = Calendar.getInstance();

        // Set Month
        // MONTH starts with 0 i.e. ( 0 - Jan)
        c1.set(Calendar.MONTH, 00);

        // Set Date
        c1.set(Calendar.DATE, 30);

        // Set Year
        c1.set(Calendar.YEAR, 2019);

        // Creating a date object
        // with specified time.
        Date dateOne = c1.getTime();

        Object dateTwo = dateOne.clone();

        System.out.println("Original Date: "
                           + dateOne.toString());
        System.out.println("Cloned Date: "
                           + dateTwo.toString());
    }
}

Output:

Original Date: Wed Jan 30 05:39:10 UTC 2019
Cloned Date: Wed Jan 30 05:39:10 UTC 2019

Reference: https://docs.oracle.com/javase/8/docs/api/java/util/Date.html#clone–