共享对象

Question

我实现一个21点游戏，我试图让多个类 - （分别ChatGUI和GameGUI）用我的“客户”类，这是有效的门口到服务器。

我试着Client类作为参数传递给每一个构造函数创建这些类，但它看起来好像我的客户端类不能将信息发回给其他类 - ChatGUI/GameGUI。

我已经有了一个工作服务器可以处理多个客户端连接！ （试验和测试）。

public class BlackJack{ 
    private Client client; 
    private ChatGUI chatgui; 
    private GameGUI gamegui; 

    public BlackJack(){ 
     // Setup Client class, which will be passed to all other classes 
     client = new Client(server, port, username, chatgui, gamegui); 

     // Setup other classes, which will be given Client class 
     chatgui = new ChatGUI(client); 
     gamegui = new GameGUI(client); 

    } 
} 

public class Client{ 
    private ChatGUI chatgui; 
    private GameGUI gamegui; 

    Client(String server, int port, String username, ChatGUI cg, GameGUI gamegui){ 
     // catch these arguments and assign them to variables  
    } 

    void display(String msg){ 
     // Method to display incoming messages to the chat screen 
     // Using ChatGUI method (*** not working? ***) 
     chatgui.append(msg + "\n"); 
    } 
} 

public class ChatGUI{ 
    private JTextArea textarea; 
    private Client client; 

    public ChatGUI(Client c){ 
     client = c; 
    } 

    // ChatGUI can use client methods 
    void sendMessage(String msg){ 
     client.sendChat(msg); 
    } 

    void append(String msg){ 
     textarea.append(msg); 
} 

public class GameGUI{ 
    private Client client; 

    public GameGUI(Client c){ 
     client = c; 
    } 

    // GameGUI can use client methods 
    void playGame(){ 
     client.playGame(); 
    } 
} 

请注意，此代码是针对更多伪代码引用编写的 - 不想粘贴数百行代码。

任何帮助将不胜感激！非常感谢您的阅读。

Answer 1

假设我正确理解你的问题，我认为这将是有益的你构成你的类有点不同......

每个酒杯对象都有一个客户端，例如

public class BlackJack{ 
    private Client client; 

    public BlackJack(){ 
     // Setup Client class, which will be passed to all other classes 
     client = new Client(server, port, username); 

    } 

然后，每个Client对象都有一个GUI类的实例，

public class Client{ 
    private ChatGUI chatgui; 
    private GameGUI gamegui; 

    Client(String server, int port, String username){ 
      chatgui = new ChatGUI(this); 
      gamegui = new GameGUI(this); 
    } 

    //handle messages from server 
    void onMessageRecieved(String msg){ 
      if(/* the message pertains to the game gui */) 
        gamegui.newMessage(msg); 
      else if(/* the message pertains to the chat gui */) 
        chatgui.newMessage(msg); 
    } 

    //here you can add functions for the gui classes to call 
    public void sendChat(String chat){ 

    } 
} 

那么你的GUI类可能看起来像......

public class ChatGUI{ 
    private JTextArea textarea; 
    private Client client; 

    public ChatGUI(Client c){ 
     client = c; 
    } 

    //receive message/command from server 
    public void newMessage(String msg){ 
     //perform the desired action based on the command 
    } 

    public void sendChat(String msg){ 
     client.sendChat(msg); 
    } 
} 

public class GameGUI{ 
    private Client client; 

    public GameGUI(Client c){ 
     client = c; 
    } 

    //receive message/command from server 
    public void newMessage(String msg){ 
     //perform the desired action based on the command 
    } 
} 

Answer 2

哼，我不知道如果我理解正确的，但它是什么你想要的是：客户端1发送聊天信息给客户机2？

换句话说：客服1 - >客户端1 - >客户机程序 - > GUI2

如果这是正确的，那么如何将消息发送到客户端2？

Answer 3

你正在做的实际实例chatGUI合格后chatGUI的参考您的客户端类，然后。所以之前通过的引用是不正确的。您需要首先实例化chatGUI和gameGUI对象。然后创建客户端对象并正确设置引用。不要试图在构造函数中传递引用，因为那时它们是无效的。