java - 在JAVA中应用MVC概念

Question

美好的一天!

关于我的 previous post , 为了按照建议适应 MVC 的概念，我更改了代码并包含了一个 IO 类，如下所示:

  public class IO {
        public void output(String msg) {
            JOptionPane.showMessageDialog(null, msg);
        }

        public String input(String prompt) {
            return JOptionPane.showInputDialog(prompt);
        }

        public int inputInt(String prompt) {
            return Integer.parseInt(input(prompt));
        }
    }


   public class GuessGame {

    private int numberToGuess;
    private ArrayList<Player> player;
    private IO io = new IO ();

    public void acceptPlayers(){
        int num_players = io.inputInt("Enter number of players");  
        player = new ArrayList<Player>(num_players);
        for (int i = 0; i < num_players; i++) {
            player.add(new Player(io.input("Enter Player " + (i+1) + " Name: ")));
        }
    }

    public void startGame() {
        numberToGuess = (int) (Math.random() * 10);
        while (true) {
            for (Player curPlayer : player) {
                if (curPlayer.guessNumber() == numberToGuess) {
                    declareWinner(curPlayer);
                    return;
                }
                io.output(curPlayer.getPlayerName() + "'s Guess is Wrong!");
            }
        }
    }

    private void declareWinner(Player player) {
        io.output(player.getPlayerName() + " Wins!");
    }
}

这是正确的吗？我怎样才能改进我的代码？谢谢。

Answer 1

IO 类代表您在 MVC 模型中的 View 。

GuessGame 类有很多责任，这个类是给你的模型和 Controller ，你必须把它分开。

您可以创建一个 Game 类，其状态为 numberToGuess 和 ArrayList player；以及方法 addPlayer() 和 start()

您可以拥有一个 GameControlled 类，它具有状态 IO 类和一个 Game 类。以及方法 acceptPlayers(),*startGame()*,declareWinner(Player player)。