Java中泛型类的泛型类

我有这样的类层次结构设置:

public abstract class GameController
public abstract class Game

我想使用一个通用的GameController类,所以它需要特定的游戏子类,所以我把它改为:

public abstract class GameController<GameType extends Game>
public abstract class Game

public abstract class GameController<GameType extends Game<PlayerType>, PlayerType extends Player>
public abstract class Game<PlayerType extends Player>

有没有更好的方法来解决这个问题,这样我就不必声明PlayerType两次(在GameController子类和Game子类中)?

编辑

GameController是一个网络类,它接收post和get请求,并将它们转换为更接近游戏所需的内容,然后一个子类(比如MyGameController)进一步转换被发布到特定游戏类(比如MyGame)的方法调用中的字节[]。代码示例:

游戏控制器:

public abstract class GameController<GameType extends Game<PlayerType>, PlayerType extends Player> {
    private Hashtable<String, GameType> games;
    public MultiplayerMain() {
        super();
        games = new Hashtable<String, GameType>();
    }
    protected abstract GameType createGame(InputStream in, String gameId);
    protected abstract PlayerType createPlayer(InputStream in, GameType game, String playerId);
    protected abstract byte[] gameAction(InputStream in, GameType game, PlayerType player);

    //Other stuff that calls createGame, createPlayer, and gameAction
}

游戏:

public abstract class Game<PlayerType extends Player> {
    private Hashtable <String, PlayerType> players = new Hashtable<String, PlayerType>();
    public final String gameId;
    public Game (String id) {
        gameId = id;
    }
    public abstract byte[] getGameState();
    public abstract byte[] getGameState(PlayerType player);
    final PlayerType getPlayer(String userId) {
        return players.get(userId);
    }
    final void addPlayer(PlayerType player) {
        players.put(player.userId,player);
        playerAdded(player);
    }
    final void removePlayer(PlayerType player) {
        players.remove(player);
        playerRemoved(player);
    }
    protected void playerAdded(PlayerType player) {}
    protected void playerRemoved(PlayerType player) {}
}

public class MyGameController extends GameController<MyGame,MyPlaer> {
    protected MyGame createGame(InputStream in, String gameId) {
        byte[] data = getInitializationData(in);
        return new MyGame(gameId,data);
    }

    protected byte[] gameAction(InputStream in, MyGame game, Player player) {
        byte[] data = getData(in);
        MyGame.methodSpecificToMyGameClassBasedOnInputStream(data);
        return game.getGameState(player);
    }

    protected Player createPlayer(InputStream in, MyGame game, String playerId) {
        byte[] otherData = getOtherData(in,game)
        return new MyPlayer(playerId,otherData);
    }
}

我的游戏:

public class MyGame extends Game<MyPlayer> {

    public MyGame(String id) {
        //...
    }

    public byte[] getGameState() {
        //...
    }

    public byte[] getGameState(Player user) {
        //...
    }

    public void methodSpecificToMyGameClassBasedOnInputStream(byte[] data) {
        //...
    }
}