diff --git a/client/src/main/java/ch/zhaw/pm2/multichat/client/ClientUI.java b/client/src/main/java/ch/zhaw/pm2/multichat/client/ClientUI.java
index 5fbdbf5..e252877 100644
--- a/client/src/main/java/ch/zhaw/pm2/multichat/client/ClientUI.java
+++ b/client/src/main/java/ch/zhaw/pm2/multichat/client/ClientUI.java
@@ -6,15 +6,32 @@ import javafx.scene.Scene;
 import javafx.scene.layout.Pane;
 import javafx.stage.Stage;
 
+/**
+ * Class in charge of initializing and loading elements needed for the GUI.
+ * Also Launching the chat window with pre-given parameters
+ */
 public class ClientUI extends Application {
     private final ClientMessageList clientMessageList = new ClientMessageList();
     private final ClientConnectionHandler connectionHandler = new ClientConnectionHandler(clientMessageList);
 
+    /**
+     * Start method will only run the chatWindow method.
+     *
+     * @param primaryStage the primary stage for this application, onto which
+     *                     the application scene can be set.
+     *                     Applications may create other stages, if needed, but they will not be
+     *                     primary stages.
+     */
     @Override
     public void start(Stage primaryStage) {
         chatWindow(primaryStage);
     }
 
+    /**
+     * Method is in charge of loading the FXML file and then initializing the controllers and setting some parameters for the stage.
+     *
+     * @param primaryStage of the Application onto which the Scene is set.
+     */
     private void chatWindow(Stage primaryStage) {
         try {
             FXMLLoader loader = new FXMLLoader(getClass().getResource("ChatWindow.fxml"));