LinkedTransferQueue poll() method in Java

/* Java Program Demonstrate poll()
   method of LinkedTransferQueue */

import java.util.concurrent.LinkedTransferQueue;

class LinkedTransferQueuePollExample1 {
    public static void main(String[] args)
    {
        // Initializing the queue
        LinkedTransferQueue<Character> queue = 
                       new LinkedTransferQueue<Character>();

        // Adding elements to this queue
        for (char ch = 'A'; ch <= 'Z'; ch++) {
            queue.add(ch);
        }

        // Printing the head of the queue
        System.out.println("The head of the queue is " 
                                           + queue.poll());

        // Printing remaining elements of the queue
        System.out.println("The elements in the queue :");
        for (Character i : queue)
            System.out.print(i + " ");
    }
}

/* Java Program Demonstrate poll()
   method of LinkedTransferQueue */

import java.util.concurrent.LinkedTransferQueue;

class LinkedTransferQueuePollExample2 {
    public static void main(String[] args)
    {
        // Initializing the queue
        LinkedTransferQueue<Integer> queue = 
                     new LinkedTransferQueue<Integer>();

        // Adding elements to this queue
        for (int i = 10; i <= 50; i += 10)
            queue.add(i);

        // Printing the head of the queue
        System.out.println("The head of the queue is " 
                                           + queue.poll());

        // Printing remaining elements of the queue
        System.out.println("The elements in the queue :");
        for (Integer i : queue)
            System.out.print(i + " ");
    }
}