package devmanuals.com;

import java.util.Queue;
import java.util.LinkedList;
import java.util.Iterator;

public class QueuePeek {
	public static void main(String args[]) {
		Queue<String> q = new LinkedList<String>();
		q.add("A");
		q.add("B");
		q.add("C");
		q.add("D");
		q.add("E");
		System.out.println("Is Queue empty : " + q.isEmpty());
		System.out.println("Elements of queue = " + q);
		System.out.println("Size of Queue : " + q.size());
		Object obj = q.peek();
		System.out.println("Element at head position = " + obj);
		Iterator iq = q.iterator();
		while (iq.hasNext()) {
			q.remove();
		}
		System.out.println("Is Queue empty : "+q.isEmpty());
		// Here the implementation of peek() method will display null
		System.out.println(q.peek());
	}
}