Correct all thing say expect the one about switchRoot I didn't understand (Btw add some comment)

app/src/main/java/school_project/Controller.java

@@ -34,7 +34,7 @@ public class Controller extends Application {
         stage.setScene(new Scene(root));
     }
     public static void main(String[] args) {
-        launch(args);
+        launch();
     }
 }