/*******************************************************************************
* Companion code for the book "Introduction to Software Design with Java",
* 2nd edition by Martin P. Robillard.
*
* Copyright (C) 2022 by Martin P. Robillard
*
* This code is licensed under a Creative Commons
* Attribution-NonCommercial-NoDerivatives 4.0 International License.
*
* See http://creativecommons.org/licenses/by-nc-nd/4.0/
*
*******************************************************************************/
package e2.chapter7;
/**
* Represents an entity from which it is possible to obtain cards.
*/
public interface CardSource
{
/**
* Returns a card from the source.
*
* @return The next available card.
* @pre !isEmpty()
*/
Card draw();
/**
* @return True if there is no card in the source.
*/
boolean isEmpty();
}