EnumSet isEmpty() in Java

isEmpty(): This method is available in java.util.EnumSet class of Java.

Syntax:

boolean java.util.AbstractCollection.isEmpty()

This method returns true if this collection contains no elements.

Parameters: NA

Returns: true if this collection contains no elements.

Exceptions: NA

Approach

Java

import java.util.EnumSet;

public class EnumSetisEmpty {
    public enum Colour {
        RED, GREEN, YELLOW, ORANGE
    };

    public static void main(String[] args) {

        EnumSet<Colour> enumSet = EnumSet.allOf(Colour.class);

        System.out.println(enumSet.isEmpty());

    }
}

Output:

false