implement ChatServer.java

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

@@ -1,15 +1,27 @@
 package com.university.chat.Server;
 
+import java.io.IOException;
+import java.net.*;
+
 public class ChatServer {
     // TODO: declare a single shared UserManager instance (static final)
     //         This MUST be shared by all ClientSession threads so that
     //         broadcasting and private messaging work correctly.
 
-    public static void main(String[] args) {
+    static final UserManager userManager = new UserManager();
+
+    public static void main(String[] args) throws IOException {
         // TODO: Create a ServerSocket
+        ServerSocket serverSocket = new ServerSocket(5000);
 
         // TODO: In an infinite loop:
         //  accept an incoming client connection
         //  make a new thread running ClientSession for each user.
+        while (true) {
+            Socket socket = serverSocket.accept();
+            ClientSession clientSession = new ClientSession(socket, userManager);
+            Thread thread = new Thread(clientSession);
+            thread.start();
+        }
     }
 }