ChatServer

package chat.server;

import chat.network.TCPConnection;
import chat.network.TCPConnectionListener;
import com.sun.security.ntlm.Server;

import java.io.IOException;
import java.net.ServerSocket;
import java.util.ArrayList;

public class ChatServer implements TCPConnectionListener {
    public static void main(String[] args){
        new ChatServer();
    }

    private final ArrayList<TCPConnection> connections = new ArrayList<>();


    private ChatServer(){
        System.out.println("Server ruuning...");
        try(ServerSocket serverSocket = new ServerSocket(8189)){
            while(true){
                try{
                    new TCPConnection(this, serverSocket.accept());
                }catch(IOException e){
                    System.out.println("TCPConnection exception: " + e);
                }
            }
        }catch (IOException e){
            throw new RuntimeException(e);
        }
    }

    @Override
    public synchronized void onCOnnectionReady(TCPConnection tcpConnection) {
        connections.add(tcpConnection);
    }

    @Override
    public synchronized void onRecieveString(TCPConnection tcpConnection, String value) {
        sendToAllConnections(value);
    }

    @Override
    public synchronized void onDisconnect(TCPConnection tcpConnection) {
        connections.remove(tcpConnection);
        sendToAllConnections("Client disconnect: " + tcpConnection);
    }

    @Override
    public synchronized void onException(TCPConnection tcpConnection, Exception e) {
        System.out.println("TCPConnection exception: " + e);
    }

    private void sendToAllConnections(String value){
        System.out.println(value);
        final int cnt = connections.size();
        for(int i = 0; i < cnt; i++) connections.get(i).sendString(value);
    }
}