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Java EnumMap clear() Method with Example

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

EnumMap Class clear() method

• clear() method is available in java.util package.
• clear() method is used to clear mappings from this enum map.
• clear() 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.
• clear() method does not throw an exception at the time of removing mappings.

Syntax:

    public void clear();

Parameter(s):

• It does not accept any parameter.

Return value:

The return type of this method is void, it returns nothing.

Example:

// Java program to demonstrate the example 
// of void clear method of EnumMap

import java.util.*;

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

    public static void main(String[] args) {
        EnumMap < Colors, String > em =
            new EnumMap < Colors, String > (Colors.class);

        // By using put() method is to
        // a dd 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 clear() method isto
        // clear the given EnumMap
        em.clear();

        // Display EnumMap
        System.out.println(em);
    }
}

Output

EnumMap: {RED=1, BLUE=2, PINK=3, YELLOW=4}
{}