Enabled filereading for tableview such that files can be loaded

src/main/java/no/ntnu/idatt1002/demo/controller/ExpensesController.java

@@ -85,9 +85,7 @@ public class ExpensesController {
     show.setItems(filter);
     show.setValue("All");
 
-    //expenseRegister = loadDataFromFile("wawawiwa");
-    Expense newExpense = new Expense(99, true, ExpenseCategory.FOOD, "1/1/23");
-    expenseRegister.addItem(newExpense);
+    expenseRegister = loadDataFromFile("Expense");
     expenses = FXCollections.observableArrayList(expenseRegister.getItems());
 
     dateColumn.setCellValueFactory(new PropertyValueFactory<Expense, String>("date"));
@@ -182,7 +180,11 @@ public class ExpensesController {
     if (fileHandling.isEmpty(fileName)) {
       //expenseRegister = new ExpenseRegister();
     } else {
+      try{
       expenseRegister = fileHandling.readExpenseRegisterFromFile(fileName);
+      } catch(IOException e) {
+        e.printStackTrace();
+      }
     }
     return expenseRegister;
   }