AbstractCollection.containsAll(Collection) in Java

AbstractCollection.containsAll(Collection<?>): This method is available in java.util.ArrayDeque class of Java.

Syntax:

boolean java.util.AbstractCollection.containsAll(Collection<?> c)

This method takes one argument. This method returns true if this collection contains all of the elements in the specified collection.

Parameters: One parameter is required for this method.

c: collection to be checked for containment in this collection.

Returns: true if this collection contains all of the elements in the specified collection.

Throws:

1. ClassCastException - if the types of one or more elements in the specified collection are incompatible with this collection.

2. NullPointerException - if the specified collection contains one or more null elements and this collection does not permit null elements(optional),or if the specified collection is null.

Approach:

Java

import java.util.ArrayDeque;

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

        ArrayDeque<Integer> arrayDeque = 
                      new ArrayDeque<Integer>();

        arrayDeque.add(1);
        arrayDeque.add(4);
        ArrayDeque<Integer> arrayDeque2 = 
                        new ArrayDeque<Integer>();

        arrayDeque2.add(2);
        arrayDeque2.add(4);
        System.out.println(arrayDeque.containsAll(arrayDeque2));

    }
}

Output:

false