package devmanuals.com;

import java.util.Deque;
import java.util.LinkedList;
import java.util.Iterator;

public class DequePoll {
	public static void main(String[] args) {
		Deque<String> dq = new LinkedList<String>();

		dq.add("Java");
		dq.add("Dev");
		dq.add("Manuals");
		dq.add(".Com");
		System.out.println("Is deque empty : " + dq.isEmpty());
		System.out.println("Elements of deque : " + dq);
		System.out.println("Size of deque before removing an element : "
				+ dq.size());
		System.out
				.println("Now after removing the head of the deque new deque is ");
		Object obj = dq.poll();
		System.out.println(dq);
		System.out.println("Removed element is = " + obj);
		System.out.println("Size of deque after removing element : "
				+ dq.size());
		System.out.println("Removes all the elements from deque");
		Iterator iq = dq.iterator();
		while (iq.hasNext()) {
			dq.poll();
		}
		System.out.println(dq);
		System.out.println("Is deque empty : " + dq.isEmpty());
		// Here implementation of the poll( ) method will display 'null'
		System.out.println(dq.poll());
	}

}