diff --git a/bob_party/src/core/conversation.ts b/bob_party/src/core/conversation.ts
index f6c35c1..52fdc34 100644
--- a/bob_party/src/core/conversation.ts
+++ b/bob_party/src/core/conversation.ts
@@ -3,15 +3,18 @@ import { User } from "./user";
 
 
 export class Conversation{
-    private TabUser?: User[];
-    private TabMessage?: Message[];
+    private TabUser: User[];
+    private TabMessage: Message[];
+    private Name?: string;
     
-    constructor(tabUser: User[], tabMessage:Message[]){
+    constructor(tabUser: User[], tabMessage:Message[], name?:string){
         this.TabUser=[...tabUser];
         this.TabMessage=[...tabMessage];
+        this.Name=name;
     }
 
     getTabMessage(){
+        this.sortMessageDesc();
         return this.TabMessage;
     }
 
@@ -25,7 +28,28 @@ export class Conversation{
 
     ajouterMessage(mess:Message){
         this.TabMessage?.push(mess);
+        this.sortMessageDesc();
+    }
+
+    getName(){
+        return this.Name;
+    }
+
+    setName(name:string){
+        this.Name=name;
+    }
+
+    getLastMessage(){
+        this.sortMessageDesc();
+        return this.TabMessage[0];
+    }
+
+    sortMessageDesc(){
+        this.TabMessage.sort(
+            (objA, objB) => objB.getMessageDate().getTime() - objA.getMessageDate().getTime(),
+        );
     }
 
 }
 
+
diff --git a/bob_party/src/core/message.ts b/bob_party/src/core/message.ts
index 0327d5c..e4058c2 100644
--- a/bob_party/src/core/message.ts
+++ b/bob_party/src/core/message.ts
@@ -16,11 +16,11 @@ export class Message{
         this.Content=content;
     }
 
-    setSMessageSender(sender: User){
+    setMessageSender(sender: User){
         this.Sender=sender;
     }
 
-    setSMessageDate(dateEnvoie: Date){
+    setMessageDate(dateEnvoie: Date){
         this.DateEnvoie=dateEnvoie;
     }