44 stock tab on UI now automatically updates

src/main/java/View/MainGameScene.java

@@ -53,9 +53,11 @@ public class MainGameScene implements ExchangeObserver {
 
   // References to UI components that need refreshing
   private TableView<PortfolioRow> portfolioTable;
+  private TableView<StockRow> table;
   private ListView<Share> holdingsList;
   private TableView<HistoryRow> historyTable;
   private ComboBox<Integer> weekFilterCombo;
+  private Runnable loadStocks;
 
   /**
    * Constructs the main game scene.
@@ -159,10 +161,10 @@ private VBox createStocksPanel() {
     filter.setItems(FXCollections.observableArrayList("All", "Gainers", "Losers"));
     filter.setValue("All");
 
-    TableView<StockRow> table = new TableView<>();
+    table = new TableView<>();
     addStockColumns(table);
 
-    Runnable loadStocks = () -> {
+    loadStocks = () -> {
       List<Stock> stocks;
       String filterVal = filter.getValue();
       String searchVal = search.getText().trim();
@@ -407,6 +409,8 @@ protected void updateItem(Share s, boolean empty) {
         }
       } catch (NumberFormatException ex) {
         alert("Error", "Enter a valid number for quantity");
+      } catch (IllegalArgumentException ex) {
+        alert("Error", ex.getMessage());
       }
     });
 
@@ -573,6 +577,9 @@ private void updateStatus() {
   }
 
   private void refreshAllUI() {
+    if (table != null && loadStocks != null) {
+      loadStocks.run();
+    }
     if (portfolioTable != null) {
       updatePortfolio(portfolioTable);
     }