changes from the reviewers implemented, some more error handling implemented with the load function of the show method

client/src/main/java/client/utils/Navigation.java

@@ -11,8 +11,8 @@ public class Navigation {
 
     /**
      * Constructs a Navigation Object that uses a fxml object and Pane that will allow to switch UI screens
-     * @param x
-     * @param y
+     * @param x - a MyFXML Object
+     * @param y - a Pane Object
      */
     public Navigation(MyFXML x, Pane y){
         this.myFXML = x;
@@ -22,14 +22,19 @@ public class Navigation {
     /**
      * The show function takes in an FxmlPath and changes the current pane to the value given by the path
      * using the load function of the myFXML object
-     * @param fxmlpath
+     * @param fxmlpath -  FXML path provided to show the next pane
      */
     public void show(String fxmlpath){
+
+        try{
             var result = myFXML.load(Object.class, fxmlpath); //stores the result of the load method in result
             Parent uiRoot = result.getValue();
             screen.getChildren().setAll(uiRoot);
-
-
+        }
+        catch(Exception e) {        //catches any failures thrown by the load method
+            System.err.println("Failed to load FXML file: " + fxmlpath);
+            throw new IllegalArgumentException("Cannot load FXML file: " + fxmlpath, e);
+        }
     }