package Puzzle;

/**
 * abstract factory class for creating PuzzleTiles
 *
 * client code must subclass and implement makeTile
 * a PuzzleTileFactory object is passed to GUIs or Apps that
 * need to create tiles
 *
 * a concrete PuzzleTileFactory is best implemented as a singleton
 *
 */
abstract class PuzzleTileFactory
{
    /**
     * @param label is the label associated with the returned Tile
     * @return PuzzleTile created by the factory
     *
     */
    
    public abstract PuzzleTile makeTile(String label);
}