允许多个用户连接到服务器

Question

好吧我正在努力做的是一个测验程序，它允许多个用户连接并查看其他团队分数，以便能够与他们进行比较。但是我遇到的问题是，我无法弄清楚如何让多个用户连接到同一台服务器，以便能够同时使用它。目前，单个用户可以一次连接。

有什么建议吗？

（线程，一个是为每个连接的用户/团队创建的）

package QuizProgram.ServerComponents;

import QuizProgram.Frames.Team;

import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.ArrayList;
import java.util.Scanner;

/**
 * Created by Daniel on 16/06/2015.
 */
public class PointsServer
{
   private static int lastArrayPosition=0;
   protected static ArrayList<TeamThread>threadsList;
   protected static ArrayList<Team>teamsList;
   protected static PrintWriter toClient;
   protected static Scanner fromClient;
   protected static ServerSocket serverSocket;
   protected static Socket socket;

   public static synchronized void setupList()
   {
      teamsList=new ArrayList<Team>();
      threadsList=new ArrayList<TeamThread>();
   }

   public static synchronized ArrayList<Team> getTeams()
   {
      return teamsList;
   }

   public static synchronized void addTeam(String teamName)
   {
      teamsList.add(new Team(teamName));
   }

   public static synchronized void addTeam(String teamName, int initialScore)
   {
      teamsList.add(new Team(teamName,initialScore));
   }

   public static synchronized void addTeamScore(String teamName, int addScore)
   {
      boolean found=false;
      int count=0;
      String currentTeamName="";
      Team currentTeam;

      while(!found && count<teamsList.size())
      {
        currentTeam=teamsList.get(count);
         currentTeamName=currentTeam.getTeamName();

         if(currentTeamName.equals(teamName))
         {
            currentTeam.setScore(currentTeam.getScore()+addScore);
            found=true;
         }
      }
   }

   public static void setupServer()
   {
      try
      {
         System.out.println("setting up server");
         serverSocket=new ServerSocket(2004);
         System.out.println("waiting for connection");
         socket=serverSocket.accept();
         System.out.println("connection established");
      }
      catch(Exception ex)
      {
         System.out.println(ex.getMessage());
      }
   }

   public static void setupThreads()
   {
      threadsList.add(new TeamThread(socket));
      //TeamThread thread=new TeamThread(teamName,toClient,fromClient,socket);
      //thread.start();
      threadsList.get(lastArrayPosition).start();
      lastArrayPosition++;

      try
      {
         socket.close();
      }
      catch(Exception ex){}
   }  
}//class

（启动服务器时如何调用服务器）

package QuizProgram;

import QuizProgram.ServerComponents.PointsServer;

/**
 * Created by Daniel on 17/06/2015.
 */
public class ServerTest
{
   public static void main(String[] args)
   {
      PointsServer.setupList();

      while(true)
      {
         PointsServer.setupServer();
         PointsServer.setupThreads();
      }

   //   PointsServer.setupServer();
   //   PointsServer.setupThreads();
   }//main
}//class

（点服务器，其中包含服务器使用和存储信息的方法的msot）

package QuizProgram.ServerComponents;

import QuizProgram.Frames.Team;

import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.ArrayList;
import java.util.Scanner;

/**
 * Created by Daniel on 16/06/2015.
 */
public class PointsServer
{
   private static int lastArrayPosition=0;
   protected static ArrayList<TeamThread>threadsList;
   protected static ArrayList<Team>teamsList;
   protected static PrintWriter toClient;
   protected static Scanner fromClient;
   protected static ServerSocket serverSocket;
   protected static Socket socket;

   public static synchronized void setupList()
   {
      teamsList=new ArrayList<Team>();
      threadsList=new ArrayList<TeamThread>();
   }

   public static synchronized ArrayList<Team> getTeams()
   {
      return teamsList;
   }

   public static synchronized void addTeam(String teamName)
   {
      teamsList.add(new Team(teamName));
   }

   public static synchronized void addTeam(String teamName, int initialScore)
   {
      teamsList.add(new Team(teamName,initialScore));
   }

   public static synchronized void addTeamScore(String teamName, int addScore)
   {
      boolean found=false;
      int count=0;
      String currentTeamName="";
      Team currentTeam;

      while(!found && count<teamsList.size())
      {
        currentTeam=teamsList.get(count);
         currentTeamName=currentTeam.getTeamName();

         if(currentTeamName.equals(teamName))
         {
            currentTeam.setScore(currentTeam.getScore()+addScore);
            found=true;
         }
      }
   }

   public static void setupServer()
   {
      try
      {
         System.out.println("setting up server");
         serverSocket=new ServerSocket(2004);
         System.out.println("waiting for connection");
         socket=serverSocket.accept();
         System.out.println("connection established");
      }
      catch(Exception ex)
      {
         System.out.println(ex.getMessage());
      }
   }

   public static void setupThreads()
   {
      threadsList.add(new TeamThread(socket));
      //TeamThread thread=new TeamThread(teamName,toClient,fromClient,socket);
      //thread.start();
      threadsList.get(lastArrayPosition).start();
      lastArrayPosition++;

      try
      {
         socket.close();
      }
      catch(Exception ex){}
   }
}//class

如果需要，我也可以显示客户端代码，但我很确定服务器端的某些内容我做错了。 感谢