diff --git a/src/Main.java b/src/Main.java
index 6337567..57b7da3 100644
--- a/src/Main.java
+++ b/src/Main.java
@@ -1,5 +1,9 @@
+
+import java.util.Scanner;
+
 public class Main {
     public static void main(String[] args){
         User user1 = new User("elyes2");
+  
     }
 }
diff --git a/src/SendMessage.java b/src/SendMessage.java
index 634aa86..cf59ccd 100644
--- a/src/SendMessage.java
+++ b/src/SendMessage.java
@@ -19,7 +19,7 @@ public static void sendMessage(InetAddress address, int port, User user) throws
         String data = user.getPseudo();
         DatagramPacket packet = new DatagramPacket(data.getBytes(),
                 data.getBytes().length, address, 45047);
-        System.out.println("J'ai renvoyé mon paquet apres l'ecoute sur le port : " + 45047);
+        //System.out.println("J'ai renvoyé mon paquet apres l'ecoute sur le port : " + 45047);
         
         
         User.getSocketEcoute().send(packet);
diff --git a/src/ThreadMenu.java b/src/ThreadMenu.java
new file mode 100644
index 0000000..b8f9c40
--- /dev/null
+++ b/src/ThreadMenu.java
@@ -0,0 +1,34 @@
+
+import java.util.Scanner;
+
+public class ThreadMenu extends Thread {
+
+    
+        private static User user;
+        
+        public ThreadMenu(String name, User user1){
+            super(name);
+         user = user1;
+        }
+
+        public void run(){
+              int choix = 0;
+        System.out.println("MENU : \n 1 : Voir liste des utilisateurs présents \n 2 : Initialiser communication (TCP) \n 9 : Quitter");
+            
+        
+        while(choix != 9) {
+           
+                Scanner sc = new Scanner(System.in);
+                choix = sc.nextInt();
+                
+               switch(choix){
+                   case 1: user.getListUser().toString();
+                           System.out.println(">>>>>>");
+                       break;
+                 //  case 2: ..
+                       //break;
+                   case 9 : return ;
+               }
+        }
+        }
+}
\ No newline at end of file
diff --git a/src/ThreadReceive.java b/src/ThreadReceive.java
index fa08861..cedf7e2 100644
--- a/src/ThreadReceive.java
+++ b/src/ThreadReceive.java
@@ -24,7 +24,7 @@ public static void receiveMessage() throws IOException {
 
         while(true){
 
-            System.out.println("Jattends de recevoir un message <<< bloqué" + "temps : " + System.currentTimeMillis());
+           // System.out.println("Jattends de recevoir un message <<< bloqué" + "temps : " + System.currentTimeMillis());
 
             byte[] recvBuf = new byte[1024];
             DatagramPacket recvPacket = new DatagramPacket(recvBuf, recvBuf.length);
@@ -34,28 +34,31 @@ public static void receiveMessage() throws IOException {
             } catch (IOException e) {
                 e.printStackTrace();
             }
-            System.out.println("Jai recu le message >>> non bloqué ");
+            // System.out.println("Jai recu le message >>> non bloqué ");
 
             String recvStr = new String(recvPacket.getData(), 0, recvPacket.getLength());
             InetAddress addr = recvPacket.getAddress();
             int port = recvPacket.getPort();
             //System.out.println("nouveau client : " + recvStr + "\n voici son adresse IP : " + addr + " et voici son port : " + port);
-            System.out.println("pseudo recu : "  + recvStr);
-            
-           
-            
-            ajoutUserListe(recvStr, addr.toString());
+          //  System.out.println("pseudo recu : "  + recvStr);
+
+            if( !user.belongList(recvStr)){
             SendMessage.sendMessage(addr, port, user);
+            ajoutUserListe(recvStr, addr.toString());
+            }
             
+            else{
+         //           System.out.println(recvStr + "est deja dans la liste >>>>>>>>>>> ");
+            }
             
         }
 
     }
     
-    public static void ajoutUserListe(String pseudo, String ip){
+    public synchronized static void ajoutUserListe(String pseudo, String ip){
             user.setListUser(pseudo,ip);
             
-            System.out.println(user.getListUser().toString());
+          //  System.out.println(user.getListUser().toString());
 
     }
 
diff --git a/src/ThreadSend.java b/src/ThreadSend.java
index c13524b..aeb53f2 100644
--- a/src/ThreadSend.java
+++ b/src/ThreadSend.java
@@ -19,7 +19,6 @@ public void run(){
         } catch (IOException ex) {
             Logger.getLogger(ThreadSend.class.getName()).log(Level.SEVERE, null, ex);
         }
-             
     }
 
     public static void sendMessageBroadcast(User user) throws IOException {
@@ -32,7 +31,7 @@ public static void sendMessageBroadcast(User user) throws IOException {
         //DatagramPacket packet2 = new DatagramPacket(data.getBytes(),
         // data.getBytes().length, address, 45048);
 
-        System.out.println("J'ai envoyé mon paquet en broadcast");
+        // System.out.println("J'ai envoyé mon paquet en broadcast");
 
         User.getSocketEnvoi().send(packet);
     }
diff --git a/src/User.java b/src/User.java
index 82ef214..266f952 100644
--- a/src/User.java
+++ b/src/User.java
@@ -36,8 +36,17 @@ public User(String pseudo){
         Thread threadReceive = new ThreadReceive("thread receive", this);
         threadReceive.start();
         
+        ThreadMenu threadMenu = new ThreadMenu("thread menu", this);
+        threadMenu.start();
+        
+        
+        
     }
 
+    public User getUser(){
+        return this;
+    } 
+    
     public String getPseudo(){
         return this.pseudo;
     }
@@ -65,4 +74,11 @@ public HashMap getListUser(){
     public void setListUser(String pseudo, String ip){
         this.listUser.put(pseudo, ip);
     }
+    
+    public boolean belongList(String pseudo){
+        if (listUser.containsKey(pseudo)){
+            return true;
+        }
+        return false;
+    }
 }
\ No newline at end of file