##some info

The client operates with request - responses.
It may also receive broadcast messages from the server so I created a thread that waits for all responses and acts accordingly.

##Client Socket (main thread)
package game_actions;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.Socket;
import java.net.UnknownHostException;
import java.util.Scanner;

import classes.PanelSocket;

public class ClientSocket extends Thread {
	private String host;
	private int port;
	//private BufferedReader bufferedReader;
	private BufferedWriter bufferedWriter;
	private static Socket socket;
	private String token;
	private PanelSocket panel;
	private static ClientSocketSrvHandler client_sck_srv_handler;
	/**
	 * Constructs a client that will connect to a server with the given host and port
	 * @param host the IP address for the connection to the server
	 * @param port the port for the connection to the server
	 * @throws IOException
	 * @throws UnknownHostException
	 */
	public ClientSocket(String host, int port) throws UnknownHostException, IOException {
		this.host = host;
		this.port = port;
		System.out.println("Connecting to server. Host: " + host + " - port: " + port);
		socket = new Socket(host, port);
		System.out.println("Connected.");
		//bufferedReader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
		bufferedWriter = new BufferedWriter(
				new OutputStreamWriter(socket.getOutputStream()));
		panel = new PanelSocket(this);
	}

	/**
	 * Starts the client.
	 * @throws UnknownHostException if the IP address could not be determined.
	 * @throws InterruptedException if the thread is interrupted while sleeping.
	 */
	public void run() {
		/*ClientSocketSrvHandler client_sck_srv_handler = new ClientSocketSrvHandler(socket, this);
		client_sck_srv_handler.start();*/
		Scanner scan = new Scanner(System.in);
		  String clientCommand;
		  boolean registerLoginLoop = true;
		  while(registerLoginLoop){
		    System.out.print("Choose action:\n0. close connection\n1. creaUtente\n2. login\n");
		    clientCommand = scan.next();
			switch(Integer.parseInt(clientCommand)){
				case 0: try {
					socket.close();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
					System.out.println("Terminating client.");
					break;
				case 1: try {
					askCreaUtente();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				} catch (InterruptedException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
					break;
				case 2:
				try {
					if (askLogin()) {
						registerLoginLoop = false;
					}
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				} catch (InterruptedException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
					break;
			  default: System.out.print("Please enter a valid choice.\n");
		    }
		  }
		  boolean actionLoop = true;
		  while(actionLoop){
			System.out.print("Choose action:\n1. creaRazza\n2. accessoPartita\n3. mappaGenerale\n4. listaGiocatori\n5. classifica\n6. uscitaPartita\n7. logout\n");
			//TODO: molte azioni ritornano boolean - in futuro, forse potrebbero ritornare void
		    clientCommand = scan.next();
		    /*if (bufferedReader.ready()) {
		    	String server_msg = bufferedReader.readLine();
		    	System.out.println("server sent message" + server_msg);
		    }*/
			switch(Integer.parseInt(clientCommand)){
		      case 1: try {
					askCreaRazza();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				} break;
			  case 2: try {
					accessoPartita();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				} break;
			  case 3: try {
					mappaGenerale();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				} break;
			  case 4: try {
					listaGiocatori();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				} break;
			  case 5: try {
					classifica();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				} break;
			  case 6: try {
					uscitaPartita();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				} break;
			  case 7: try {
					logout();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				} break;
			  default: System.out.print("Please enter a valid choice.\n");
		    }
		  }
	}

	public boolean askCreaUtente() throws IOException, InterruptedException {
		Scanner scan = new Scanner(System.in);

	    System.out.print("Username:\n");
	    String username = scan.next();
	    System.out.print("Password:\n");
		String password = scan.next();
		String command = "@creaUtente,user="+username+",pass="+password;
		bufferedWriter.write(command);
		bufferedWriter.newLine();
		bufferedWriter.flush();
		String answer = client_sck_srv_handler.getResponse();
		if (answer != null) {
			System.out.println("Server response: " + answer);
			if (answer.equals("@ok")){
				return true;
			}
		}
		return false;
	}

	public boolean askLogin() throws IOException, InterruptedException {
		Scanner scan = new Scanner(System.in);

	    System.out.print("Username:\n");
	    String username = scan.next();
	    System.out.print("Password:\n");
		String password = scan.next();
		String command = "@login,user="+username+",pass="+password;
		bufferedWriter.write(command);
		bufferedWriter.newLine();
		bufferedWriter.flush();
		String answer = client_sck_srv_handler.getResponse();
		if (answer != null) {
			System.out.println("Server response: " + answer);
			if (answer.startsWith("@ok")){
				//save the token
				String[] splitted = answer.split(",");
				this.token = splitted[1];
				System.out.println("token received: " + this.token);
				return true;
			}
		}
		return false;
	}

	public boolean askCreaRazza() throws IOException {
		Scanner scan = new Scanner(System.in);

	    System.out.print("Species Name:\n");
	    String species_name = scan.next();
	    System.out.print("Species Type (c or e):\n");
		String species_type = scan.next();
		String command = "@creaRazza,token="+this.token+",nome="+species_name+",tipo="+species_type;
		System.out.println("command: "+command);
		bufferedWriter.write(command);
		bufferedWriter.newLine();
		bufferedWriter.flush();
		String answer = bufferedReader.readLine();
		if (answer != null) {
			System.out.println("Server response: " + answer);
			/*if (answer.equals("@ok")){
				return true;
			}*/
		}
		return false;
	}

	public boolean accessoPartita() throws IOException {
		String command = "@accessoPartita,token="+this.token;
		bufferedWriter.write(command);
		bufferedWriter.newLine();
		bufferedWriter.flush();
		String answer = bufferedReader.readLine();
		if (answer != null) {
			System.out.println("Server response: " + answer);
			/*if (answer.equals("@ok")){
				return true;
			}*/
		}
		return false;
	}

	public boolean mappaGenerale() throws IOException {
		String command = "@mappaGenerale,token="+this.token;
		bufferedWriter.write(command);
		bufferedWriter.newLine();
		bufferedWriter.flush();
		String answer = bufferedReader.readLine();
		if (answer != null) {
			System.out.println("Server response: " + answer);
			if (answer.startsWith("@mappaGenerale")){
				System.out.println("Rendering map...");
				String[] mappa = answer.split("},");
				String mappachars = mappa[1];
				/*mappachars = mappachars.replaceAll("(\\[)", "");
				mappachars = mappachars.replaceAll("(\\])", "");*/
				panel.showPanel(mappachars);
			}
		}
		return false;
	}

	public boolean muoviDinosauro(String id_dino, String dest) throws IOException { //TODO cambiare string dest - forse ritorno da cambiare in String o simile
		String command = "@muoviDinosauro,token="+this.token+",idDino="+id_dino+",dest="+dest;
		bufferedWriter.write(command);
		bufferedWriter.newLine();
		bufferedWriter.flush();
		String answer = bufferedReader.readLine();
		if (answer != null) {
			System.out.println("Server response: " + answer);
			if (answer.startsWith("@ok")){
				//movimento possibile - spostare dinosauro panel
			}
			else
			if (answer.startsWith("@combattimento")){
				//battle! - eliminare dinosauro perdente dalla mappa
			}
			else
				return false;
		}
		return false;
	}

	public String vistaLocale(String dino_id) throws IOException {
		String command = "@vistaLocale,token="+this.token+",idDino="+dino_id;
		System.out.println(command);
		bufferedWriter.write(command);
		bufferedWriter.newLine();
		bufferedWriter.flush();
		String answer = bufferedReader.readLine();
		if (answer != null) {
			System.out.println("Server response: " + answer);
			return answer;
		}
		return null;
	}

	public String listaDinosauri() throws IOException {
		String command = "@listaDinosauri,token="+this.token;
		System.out.println(command);
		bufferedWriter.write(command);
		bufferedWriter.newLine();
		bufferedWriter.flush();
		String answer = bufferedReader.readLine();
		if (answer != null) {
			System.out.println("Server response: " + answer);
			return answer;
		}
		return null;
	}

	public String statoDinosauro(String dino_id) throws IOException {
		String command = "@statoDinosauro,token="+this.token+",idDino="+dino_id;
		System.out.println(command);
		bufferedWriter.write(command);
		bufferedWriter.newLine();
		bufferedWriter.flush();
		String answer = bufferedReader.readLine();
		if (answer != null) {
			System.out.println("Server response: " + answer);
			return answer;
		}
		return null;
	}

	public boolean listaGiocatori() throws IOException {
		String command = "@listaGiocatori,token="+this.token;
		System.out.println(command);
		bufferedWriter.write(command);
		bufferedWriter.newLine();
		bufferedWriter.flush();
		String answer = bufferedReader.readLine();
		if (answer != null) {
			System.out.println("Server response: " + answer);
			/*if (answer.equals("@ok")){
				return true;
			}*/
		}
		return false;
	}

	public boolean classifica() throws IOException {
		String command = "@classifica,token="+this.token;
		System.out.println(command);
		bufferedWriter.write(command);
		bufferedWriter.newLine();
		bufferedWriter.flush();
		String answer = bufferedReader.readLine();
		if (answer != null) {
			System.out.println("Server response: " + answer);
			/*if (answer.equals("@ok")){
				return true;
			}*/
		}
		return false;
	}

	public boolean uscitaPartita() throws IOException {
		String command = "@uscitaPartita,token="+this.token;
		bufferedWriter.write(command);
		bufferedWriter.newLine();
		bufferedWriter.flush();
		String answer = bufferedReader.readLine();
		if (answer != null) {
			System.out.println("Server response: " + answer);
			if (answer.equals("@ok")){
				panel.closePanel();
				return true;
			}
		}
		return false;
	}

	public boolean logout() throws IOException {
		String command = "@logout,token="+this.token;
		bufferedWriter.write(command);
		bufferedWriter.newLine();
		bufferedWriter.flush();
		String answer = bufferedReader.readLine();
		if (answer != null) {
			System.out.println("Server response: " + answer);
			if (answer.equals("@ok")){
				socket.close();
				System.out.println("client terminated.");
			}
		}
		return false;
	}

	public static void main(String[] args) throws UnknownHostException, IOException {
		ClientSocket client = new ClientSocket("localhost", 2011);
		client.start();
		client_sck_srv_handler = new ClientSocketSrvHandler(socket, client);
		client_sck_srv_handler.start();
	}

}

##ClientSrvHandler (thread 2)
package game_actions;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.Socket;

import lib.RegExHelper;

public class ClientSocketSrvHandler extends Thread {

	/**
	 * The socket for the connection with the client.
	 */
	private Socket socket;

	/**
	 * The general server
	 */
	private ClientSocket client;

	/**
	 * the token to communicate with the client
	 */
	String token;
	//Panel panel = new Panel();

	BufferedReader bufferedReader;
	BufferedWriter bufferedWriter;

	/**
	 * Constructs a ClientHandler that will answer to requests coming through the given socket.
	 * @param socket the socket already connected to the client
	 * @throws IOException
	 */
	public ClientSocketSrvHandler(Socket socket, ClientSocket client) throws IOException {
		this.socket = socket;
		this.client = client;
		bufferedReader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
		//bufferedWriter = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));
	}

	/* (non-Javadoc)
	 * @see java.lang.Thread#run()
	 */
	public void run() {
		while (true) {
			try {
				getResponse();
			} catch (InterruptedException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
	}

	public String getResponse() throws InterruptedException, IOException {
		//this.client.wait();
		String response = bufferedReader.readLine();
		if (response == null) {
			System.out.println("Client closed connection.");
		}
		else {
			//this.client.notify();
			return response;
		}
		return "";
	}
}