Server

package se.dalsit.net;

import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.ArrayList;
import java.util.Iterator;

import se.dalsit.net.Packet.NewConnection;

public class Server {

    private final static String SERVERSTRING = "[SERVER]: ";
    private ServerSocket server;


    private ArrayList<ObjectOutputStream> connectionsList = new ArrayList<ObjectOutputStream>();
    private ArrayList<Player> playersList  = new ArrayList<Player>();


    public static void main(String[] args) {
        new Server();


    }


    public Server() {


        startNetworking();


    }


    private void startNetworking() {

        try {
            server = new ServerSocket(4242);
            System.out.println(SERVERSTRING + "Server started at port 4242");

            while (true) {

                //Accepts the incoming connection!
                Socket clientSocket =   server.accept();

                //Creates a objectWriter and adds it to the objectWriterList
                ObjectOutputStream objectWriter = new ObjectOutputStream (clientSocket.getOutputStream());
                ObjectInputStream reader = new ObjectInputStream (clientSocket.getInputStream());
                connectionsList.add(objectWriter);


                // Logger
                System.out.println(SERVERSTRING + "Got a connection from: "
                        + clientSocket.getInetAddress());


                System.out.println(SERVERSTRING + "Creating player");

                //Creates the player and sents it to the CLient

                createPlayer(objectWriter);

                // Logger
                System.out.println(SERVERSTRING + "Player sent");

                // sends the arrayList of players to the connecting client!
                objectWriter.writeObject(playersList);

                // Logger
                System.out.println(SERVERSTRING + "List sent!");

                //Sends the arraylist to all the connected clients!
                Thread t = new Thread (new ClientHandler(connectionsList.size(),reader),"Client" + connectionsList.size());
                t.start();



            }



        }catch (Exception e) {
            e.printStackTrace();
        }



    }


    private void sendToAll() {
        Iterator<ObjectOutputStream> it = connectionsList.iterator();
        while (it.hasNext()) {
            try {
                ObjectOutputStream writer =it.next();
                writer.writeObject(this.playersList);
                System.out.println(SERVERSTRING +"SEND TO ALL CLIENTS SIZE: " + this.playersList.size());

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

                }
            }
        }





    private void createPlayer(ObjectOutputStream currentConnection) {

        Player p = new Player(connectionsList.size());
        playersList.add(p);
        try {
            currentConnection.writeObject(p);

        } catch (IOException e) {

            e.printStackTrace();
        }



    }


    private class ClientHandler implements Runnable {
        int id;
        ObjectInputStream reader;
        Object o;

        private ClientHandler (int id,ObjectInputStream reader) {
            this.reader = reader;
            this.id = id;
        }



        public void run () {


            try {
                while ((o = reader.readObject()) !=  null) {

                    if (o instanceof Packet.NewConnection) {
                        System.out.println("New Connection!");
                        sendToAll();


                    }







                }
            } catch (ClassNotFoundException e) {

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

                e.printStackTrace();
            }






        }

    }

}