Updated javadoc.

racevisionGame/src/main/java/visualiser/app/App.java

@@ -144,7 +144,8 @@ public class App extends Application {
 
     /**
      * Show the main stage after the splash screen
-     * @throws Exception
+     * @param stage main stage for application
+     * @throws Exception Throws an exception on error
      */
     public void showMainStage(Stage stage) throws Exception {
         App.stage = stage;
@@ -174,8 +175,8 @@ public class App extends Application {
     /**
      * Show the splash screen
      * @param initStage Initial stage
-     * @param task
-     * @param initCompletionHandler
+     * @param task Task for splash screen
+     * @param initCompletionHandler initCompletionHandler interface
      */
     private void showSplash(
             final Stage initStage,