Application TCP Client Serveur en java

import java.net.ServerSocket ;
import java.net.SocketException ;
 
import java.io.IOException ;
 
public class Server {
 
	private boolean ok=true ;
	private ServerSocket server;
 
	private final int PORT= 5163;
 
	public static void main (String [] args ){
		new Server();
	}
 
	public Server (){
		try{
			server = new ServerSocket (PORT);
		}//try
		catch (SocketException e) {
			System.out.println(e.getMessage() + " 01");
		} // catch
		catch (IOException e) {
			System.out.println(e.getMessage()+" 02");
		}//catch
		System.out.println("En écoute sur le port : " + PORT );
		while (ok) {
			try {
				new Connect(server.accept());
			} //try
			catch (IOException e) {
				System.out.println(e.getMessage()+ " 03");
			}//catch
 
		}//while
	}//Serve
 
}//class

import java.net.Socket ;
 
import java.lang.Thread ;
import java.lang.IllegalThreadStateException ;
import java.lang.NullPointerException ;
 
import java.io.PrintWriter ;
import java.io.BufferedWriter ;
import java.io.OutputStreamWriter ;
import java.io.IOException ;
 
import java.util.ArrayList ;
public class Connect implements Runnable {
	private Thread thd ;
	private Socket socket ;
	private PrintWriter out ;
	//private InputStream in  ;
 
	private static ArrayList<Connect> listC = new ArrayList<Connect>(1);
	public Connect (Socket socket_) {
		listC.add(this);
		socket = socket_ ;
		thd = new Thread (this) ;
		thd.start();
	}//connect
 
	public void run () {
		try {
			out = new PrintWriter(new OutputStreamWriter(socket.getOutputStream()), true );
//in  = new BufferedReader(new  InputStreamReader(socket.getInputStream ()));
		}//try
 
		catch (IOException a ) {
			System.out.println("erreur2") ;
			a.printStackTrace() ;  }//catch IO
 
			while (true){
				try {
					/*if (in.ready()==true) {*/
 
//-------------------------Reception des caracteres----------------------------------
					int t;
					String tmp="" ;
					do {t = socket.getInputStream().read() ; tmp = tmp + (char)t; }
					while (t!=10) ;
 
//-----------------------------------------------------------------------------------
 
					System.out.println("|" + tmp + "|" ) ;
// 					dispatch(tmp, );
					switch(tmp.charAt(0)) {
						case 0 :
							System.out.println("MSG> " + tmp) ;
							dispatch(tmp , socket) ;
							break ;
						case 1 :
							System.out.println("ATK> " + tmp) ;
							break ;
						case 2 :
							System.out.println("MOV> " + tmp) ;
							break ;
						default :
							System.out.println("INC>" + tmp) ;
					}//switch
				}//try
				catch (IOException a ) {
					System.out.println("erreur2") ;
					a.printStackTrace() ;  }//catch IO
 
			}//while
	}//run
 
	public static void dispatch (String scor, Socket socket) {
		for (int i = 0 ; i < listC.size() ; i++) {
			if (listC.get(i).socket!=socket){try{listC.get(i).send(scor) ;}
				catch (NullPointerException e) {
					System.out.println("morte la connection :(" ) ;listC.remove(i) ;
				}//catch
			}//if
		}//for
	}//dispatch
 
 
	public void send (String scor){
		out.println(scor) ;
	}//send
}//class

import java.net.Socket ;
 
import java.io.PrintWriter ;
import java.io.OutputStreamWriter;
import java.io.IOException ;
 
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.DataOutputStream;
 
 
public class Client implements Runnable {
 
 
	private String addr;
	private String port;
	private PrintWriter out;
	private DataOutputStream out2;
	private	Socket socket;
	private Thread thd;
 
public static void main (String [] args) {
	if(args.length == 0){
		System.out.println("Tentative de connection à localhost:5163");
		new Client("localhost","5163");
	}else{
		new Client(args[0], args[1]);
	}
}
 
 
public Client(String addr, String port){
	try{
		socket = new Socket (addr , Integer.parseInt(port));
		socket.setSoLinger(true , 10);
	}//try
	catch (IOException a ){
		System.out.println("erreur2 " + a.getMessage()) ; a.printStackTrace() ;
	}
 
	try{
		out = new PrintWriter(new OutputStreamWriter(socket.getOutputStream()), true );
		out2 = new DataOutputStream(socket.getOutputStream());
	}//try
 
	catch (IOException a ) {
		System.out.println("erreur3") ;
		a.printStackTrace();
	}//catch IO
	thd = new Thread (this) ;
	thd.start();
 
		while (true){
			try {
//-----------------------------------------------------------------------------------
				int t;
				String tmp="" ;
				do {
					t = socket.getInputStream().read();
					tmp = tmp + t;
				}while (t!=0) ;
 
//-----------------------------------------------------------------------------------
					System.out.println(tmp);
			}//try
			catch (IOException a ) {
				System.out.println("erreur4") ;
				a.printStackTrace() ;  }//catch IO
		}//while
}//Client
 
public void run (){
	BufferedReader entree = new BufferedReader(new InputStreamReader(System.in));
	try {
		out.println(entree.readLine());
		out.flush();
// 		out2.writeBytes(entree.readLine() + "\n");
	} catch( IOException e ) {
		System.out.println("Erreure lors de l'envoie");
		e.printStackTrace();
	}
}
 
}//class