EnumSet contains(Object) in Java

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

Syntax:

boolean java.util.AbstractCollection.contains(Object o)

This method takes one argument of type Object as its parameter. This method returns true if this collection contains the specified element

Parameters: One parameter is required for this method.

o: element whose presence in this collection is to be tested.

Returns: true if this collection contains the specified element.

Throws:

1. ClassCastException - if the type of the specified element is incompatible with this collection.

2. NullPointerException - if the specified element is null and this collection does not permit null elements.

Approach

Java

import java.util.EnumSet;

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

    public static void main(String[] args) {

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

        System.out.println(enumSet.contains(Colour.GREEN));

    }
}

Output:

true