如何在运行方法之外访问HashMap值？

问：

我的服务器项目中有一个静态内部类。在 run 方法中，我想为每个客户端创建一个对象，其中包含客户端的用户名、套接字和他的 IP 地址。此外，我想将这个对象存储在 HashMap 中。我的问题是，地图中的值只能在 run 方法中访问。我想访问函数内的 Map 值，但函数内的 Map 是空的。mainThreadForPlayerssendMessageToInvitedPlayer

这是我的代码：

public static class mainThreadForPlayers extends Thread {
       DatabaseConnection data = new DatabaseConnection();
       static HashMap<String, Clients> allUsersInfo;
     
       static{
         allUsersInfo = new HashMap<String, Clients>();
       }
       ServerSocket serverSocket;
       boolean accepted = false;
       boolean x = true;
     
       public void run(){
          try{
            
                   serverSocket = new ServerSocket(8000);
            
                   while(x){
                       Socket player1 = serverSocket.accept();
                       InetSocketAddress socketAddress = (InetSocketAddress) player1.getRemoteSocketAddress();
                       String clientIpAddress = socketAddress.getAddress().getHostAddress();
                       try{
                         Thread.sleep(15000);
                       }catch(Exception e){}
                       String username = data.getLastInserted();
                       Clients client = new Clients(username, player1, clientIpAddress);
                       InsertIntoMap(username, client);

                    }
                  
               }
               catch(IOException ex){ex.printStackTrace();}
        }

      public static void InsertIntoMap(String username, Clients client){
           
           if(allUsersInfo.containsKey(username)){
                return;
           }else{
                                
                                allUsersInfo.put(username, client);}
                                for (String name: allUsersInfo.keySet()) {
                                String key = name;
                                String value = allUsersInfo.get(name).toString();
                                System.out.println(key + " " + value);
             }
        
    }

      public void sendMessageToInvitedPlayer(String from_user, String to_user) throws IOException{
 
              if(allUsersInfo.isEmpty()){
                  System.out.println("Hello from server empty");
              }
              else{
                  System.out.println("Hello from server NOT empty");

              }
          
           }  
        
    
}