package queue;

import exceptions.EmpyQueueException;
import exceptions.EmpyStackException;

/**
 * Created with xgiovio.macbookair.
 * User: xgiovio
 * Date: 10/03/14
 * Time: 15:45
 */
abstract public class QueueRules <E> {

    abstract  public  void enqueue (E element);
    abstract  public E dequeue () throws EmpyQueueException;
    abstract  public E front() throws  EmpyQueueException;
    abstract  public boolean isEmpty();
    abstract  public int size();

}