Slight code cleanup

src/main/java/team/elrant/bubbles/xmpp/ConnectedUser.java

@@ -21,7 +21,7 @@
  * It describes how the app's current user should connect, behave, send messages, etc.
  */
 public class ConnectedUser extends User {
-    private String password;
+    private final String password;
     private Roster roster;
     private AbstractXMPPConnection connection = null;   // When accessing this property, make sure it's not null
                                                         // (or just run InitializeConnection first)

src/main/java/team/elrant/bubbles/xmpp/SimpleXMPPClient.java

@@ -8,20 +8,22 @@ public static void main(String[] args) {
         String password = "";
         String serviceName = "elrant.team";
 
-        ConnectedUser user = null;
+        ConnectedUser connectedUser = null;
         try {
-            user = new ConnectedUser(username, password, serviceName);
+            connectedUser = new ConnectedUser(username, password, serviceName);
             System.out.println("Connection established!");
         } catch (Exception e) {
             e.printStackTrace(); // Replace with more robust error handling in the future
         }
 
         try {
-            user.addIncomingMessageListener(); /* Print any incoming messages */
-            Thread.sleep(10000); /* Sleep for 10 seconds */
+            if (connectedUser != null && connectedUser.isLoggedIn()) {
+                connectedUser.addIncomingMessageListener(); /* Print any incoming messages */
+                Thread.sleep(10000); /* Sleep for 10 seconds */
+                connectedUser.disconnect();
+            }
         } catch (InterruptedException e) {
             e.printStackTrace(); // Replace with more robust error handling in the future
         }
-        user.disconnect();
     }
 }

src/main/java/team/elrant/bubbles/xmpp/User.java

@@ -1,8 +1,5 @@
 package team.elrant.bubbles.xmpp;
 
-import org.jivesoftware.smack.SmackException;
-import org.jivesoftware.smack.XMPPException;
-
 import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.ObjectInputStream;