我在Java遇到一个奇怪的问题，我从来没有见过。

错误是“服务器类型的没有封闭实例是可访问的。必须使用服务器类型的封闭实例(例如x.new A()，其中x是服务器的实例)限定分配。

我注释过的行是发生错误的地方。

package game;

import java.io.BufferedReader;

import java.io.DataOutputStream;

import java.io.IOException;

import java.io.InputStreamReader;

import java.net.ServerSocket;

import java.net.Socket;

import java.util.ArrayList;

import java.util.List;

import java.util.NoSuchElementException;

import java.util.StringTokenizer;

public class Server {

private static List clients;

class ReceiveDataListener implements SocketListener {

@Override

public void dataReceived(ThreadModtagClient client, String data) {

}

}

/**

* @param args

* @throws IOException

*/

public static void main(String[] args) throws IOException {

// TODO Auto-generated method stub

clients = new ArrayList();

ServerSocket welcomeSocket = new ServerSocket(16567);

while (true) {

Socket connectionSocket = welcomeSocket.accept();

ThreadModtagClient client = new ThreadModtagClient(connectionSocket);

ReceiveDataListener listener = new ReceiveDataListener(); //

client.addSocketListener(listener);

clients.add(client);

}

}

}

class ThreadModtagClient extends Thread implements SocketThread {

private BufferedReader inFromClient;

private DataOutputStream outToClient;

private Player player;

private List listeners;

public ThreadModtagClient(Socket connection) throws IOException {

inFromClient = new BufferedReader(new InputStreamReader(connection.getInputStream()));

outToClient = new DataOutputStream(connection.getOutputStream());

listeners = new ArrayList();

}

public void addSocketListener(SocketListener listener) {

listeners.add(listener);

}

public void removeSocketListener(SocketListener listener) {

listeners.remove(listener);

}

public Player getPlayer() {

return player;

}

public void setPlayer(Player player) {

this.player = player;

}

public void sendData(String data) throws IOException {

outToClient.writeChars(data);

}

public void run() {

while (true) {

try {

String data = inFromClient.readLine();

for(SocketListener listener : listeners) {

listener.dataReceived(this, data);

}

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch(NoSuchElementException e1) {

e1.printStackTrace();

}

}

}

}