public class MazeAbstractFactory
{
    public static Maze createMaze(MazeFactory pFactory)
    {
         Room room = pFactory.makeRoom();
         Wall wall = pFactory.makeWall();
         Door door = pFactory.makeDoor();
         Maze maze = new Maze();
         maze.addRoom(room);
         maze.addWall(wall);
         maze.addDoor(door);
         return maze;
    }
}

public class MazeFactory
{

    // Factory Methods
    public Room makeRoom()
    {
         Room room = new Room();
         return room;
    }
    public Wall makeWall()
    {
         Wall wall = new Wall();
         return wall;
    }
    public Door makeDoor()
    {
         Door door = new Door();
         return door;
    }
}

public class EvilMazeFactory extends MazeFactory
{
    public Room makeRoom()
    {
         EvilRoom room = new EvilRoom();
         return room;
    }
    public Wall makeWall()
    {
         EvilWall wall = new EvilWall();
         return wall;
    }
    public Door makeDoor()
    {
         EvilDoor door = new EvilDoor();
         return door;
    }
}

public class GoodMazeFactory extends MazeFactory
{
    public Room makeRoom()
    {
         GoodRoom room = new GoodRoom();
         return room;
    }
    public Wall makeWall()
    {
         GoodWall wall = new GoodWall();
         return wall;
    }
    public Door makeDoor()
    {
         GoodDoor door = new GoodDoor();
         return door;
    }
}

public class HauntedMazeFactory extends MazeFactory
{
    public Room makeRoom()
    {
         HauntedRoom room = new HauntedRoom();
         return room;
    }
    public Wall makeWall()
    {
         HauntedWall wall = new HauntedWall();
         return wall;
    }
    public Door makeDoor()
    {
         HauntedDoor door = new HauntedDoor();
         return door;
    }
}


public class Maze
{
    Collection mazeBuilder = new ArrayList();

    public Maze()
    {
    }
    public addWall(Wall pWall)
    {
    }
    public addRoom(Room pRoom)
    {
    }
    public addDoor(Door pDoor)
    {
        mazeBuilder.add(pDoor);
    }

}

public class Wall
{
    public Wall()
    {
    }
}
public class EvilWall extends Wall
{
    public EvilWall()
    {
    }
}
public class Room
{
    public Room()
    {
    }
}
public class EvilRoom extends Room
{
    public EvilRoom()
    {
    }
}
public class Door
{
    public Door()
    {
    }
}
public class EvilDoor extends Door
{
    public EvilDoor()
    {
    }
}


/**
 * Transaction would come from a webpage, and the webpage would
 * prepend the type of transaction so we could create the appropriate
 * object.
 */
public class MerchantBean
{
    public static void main(String[] args)
    {
	if (args.length == 0)
	{
	    System.out.println("Enter payment type.");
	    System.exit(0);
	}
        String name = args[0];
            MazeFactory factory = new MazeFactory();
        if ("Good".equals(name)) {
            factory = new GoodMazeFactory();
        }
        else if ("Evil".equals(name)) {
            factory = new EvilMazeFactory();
        }
        else if ("Haunted".equals(name)) {
            factory = new HauntedMazeFactory();
        }
        Maze maze = MazeAbstractFactory.createMaze(factory);

    }
}