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Java EnumMap clone() Method with Example

EnumMap Class clone() method: Here, we are going to learn about the clone() method of EnumMap Class with its syntax and example.
Submitted by Preeti Jain, on February 10, 2020

EnumMap Class clone() method

• clone() method is available in java.util package.
• clone() method is used to clone this enum map or in other words, we can say it returns a shallow copy of this enum map.
• clone() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.
• clone() method does not throw an exception at the time of cloning enum map.

Syntax:

    public EnumMap clone();

Parameter(s):

• It does not accept any parameter.

Return value:

The return type of this method is EnumMap, it returns a cloned copy of this enum map.

Example:

// Java program to demonstrate the example 
// of EnumMap clone() method of EnumMap

import java.util.*;

public class CloneOfEnumMap {
    public enum Colors {
        RED,
        BLUE,
        PINK,
        YELLOW
    };

    public static void main(String[] args) {
        // We are creating two EnumMap objects
        EnumMap < Colors, String > em =
            new EnumMap < Colors, String > (Colors.class);

        EnumMap < Colors, String > clone_em =
            new EnumMap < Colors, String > (Colors.class);

        // By using put() method is to
        // add the linked values in an EnumMap
        em.put(Colors.RED, "1");
        em.put(Colors.BLUE, "2");
        em.put(Colors.PINK, "3");
        em.put(Colors.YELLOW, "4");

        // Display EnumMap
        System.out.println("EnumMap :" + em);

        // By using clone() method isto
        // clone the given EnumMap (em)
        clone_em = em.clone();

        // Display Cloned EnumMap
        System.out.println("em.clone(): " + clone_em);
    }
}

Output

EnumMap :{RED=1, BLUE=2, PINK=3, YELLOW=4}
em.clone(): {RED=1, BLUE=2, PINK=3, YELLOW=4}