Array Deque

 package com.company;

import java.util.ArrayDeque;

public class CWH_93_ArrayDequeue {
    public static void main(String[] args) {
        ArrayDeque<Integer> D1= new ArrayDeque<>();
        D1.add(6);
        D1.add(65);
        D1.add(64);
        D1.add(57);
        for (int e:D1) {
            System.out.println(e);
        }
        System.out.println(D1.getFirst());
        System.out.println(D1.getLast());
        System.out.println("Size of array is "+ D1.size());
    }

}