chatClient completed.

src/main/java/com/university/chat/Client/ServerListener.java

@@ -1,6 +1,10 @@
 package com.university.chat.Client;
 
+import java.io.ObjectInputStream;
+
 public class ServerListener implements Runnable{
+    public ServerListener(ObjectInputStream in) {
+    }
     // TODO: store the ObjectInputStream from the user socket
     //          (this should be the same input stream the
     //           chatClient created when connecting)

src/main/java/com/university/chat/Client/chatClient.java

@@ -1,29 +1,102 @@
 package com.university.chat.Client;
 
+import com.university.chat.Common.ChatMessage;
+import com.university.chat.Common.FileMessage;
+import com.university.chat.Common.MessageType;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
+import java.net.Socket;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.Scanner;
+
 public class chatClient {
-    public static void main() {
-        // TODO: Connecting to the server
-        //  1. Create a socket and connect to the server
-        //  2. Create an ObjectOutputStream (out) and ObjectInputStream (in)
-        //      from the socket's streams — output FIRST, then input.
-        //  2. Get the username, and send a LOGIN ChatMessage with that username
-        //  3. Start a new Thread running a ServerListener(in) so incoming
-        //      messages are handled concurrently.
+    public static void main() throws IOException {
+        
+        String host = "localhost";
+        int port = 8080;
+        Scanner scanner = new Scanner(System.in);
+
+        System.out.println("Please enter your name: ");
+        String username = scanner.nextLine();
+
+        try (Socket socket = new Socket(host, port);) {
+            ObjectOutputStream out = new ObjectOutputStream(socket.getOutputStream());
+            out.flush();
+
+            ObjectInputStream in = new ObjectInputStream(socket.getInputStream());
+
+            ChatMessage loginMessage = new ChatMessage(MessageType.LOGIN,"Server", username, "Login successful.");
+            out.writeObject(loginMessage);
+            out.flush();
+
+            ServerListener serverListener = new ServerListener(in);
+            Thread listenerThread = new Thread(serverListener);
+            listenerThread.start();
 
             while (true) {
                 try {
-                // TODO: Program loop — read a line from the console and act on it:
-                //   - "/msg <user> <text>"        -> build & send a PRIVATE_MESSAGE
-                //   - "/users"                    -> build & send a USER_LIST request
-                //   - "/sendfile <user> <path>"   -> read the file into a byte[]
-                //                                     (you can use TransferProgress
-                //                                     to show progress)
-                //                                     and send it as a FileMessage
-                //   - anything else               -> send a PUBLIC_MESSAGE
-                //   Remember to flush() the output stream after writeObject().
+                    String input = scanner.nextLine().trim();
+
+                    if (input.isEmpty()) {continue;}
+
+                    if (input.startsWith("/msg ")) {
+                        String[] parts = input.split(" ");
+
+                        if (parts.length < 3) {
+                            System.out.println("Usage: /msg <user> <text>");
+                            continue;
+                        }
+                        String target = parts[1];
+                        String msg = parts[2];
+
+                        ChatMessage privateMessage = new ChatMessage(MessageType.PRIVATE_MESSAGE, username, target, msg);
+                        out.writeObject(privateMessage);
+                        out.flush();
+
+                    } else if (input.equalsIgnoreCase("/users")) {
+                        ChatMessage usersList = new ChatMessage(MessageType.USER_LIST, username, "Server", "Users list request.");
+                        out.writeObject(usersList);
+                        out.flush();
+
+                    } else if (input.startsWith("/sendfile ")) {
+                        String[] parts = input.split(" ");
+
+                        if (parts.length < 3) {
+                            System.out.println("Usage: /sendfile <user> <text>");
+                            continue;
+                        }
+                        String target = parts[1];
+                        String filePathStr = parts[2];
+
+                        File file = new File(filePathStr);
+                        if (!file.exists() || !file.isFile()) {
+                            System.out.println("File not found: " + filePathStr);
+                            continue;
+                        }
+
+                        byte[] fileData = Files.readAllBytes(Path.of(filePathStr));
+
+                        FileMessage fileMessage = new FileMessage(username, target, filePathStr, fileData);
+                        out.writeObject(fileMessage);
+                        out.flush();
+                        System.out.println("File sent successfully.");
+
+                    } else {
+                    ChatMessage publicMsg = new ChatMessage(MessageType.PUBLIC_MESSAGE, username, null, input);
+                    out.writeObject(publicMsg);
+                    out.flush();
+                }
+
                 } catch (Exception e){
                     System.out.println("command failed: " + e.getMessage());
                 }
             }
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
     }
 }

src/main/java/com/university/chat/Server/ClientSession.java

@@ -169,7 +169,6 @@ public class ClientSession implements Runnable {
         Files.write(sentPath, fileMsg.getData());
         Files.write(recvPath, fileMsg.getData());
 
-        // TODO: Forward the received file-message to the destination user.
         String receiverName = fileMsg.getReceiver();
         ClientSession receiverSession = ChatServer.userManager.getUser(receiverName);