Potentially caught exception in the correct manner

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

@@ -167,9 +167,11 @@ public class AddExpenseController {
   private void addEventFilters() {
     okBtn.addEventFilter(
         ActionEvent.ACTION, event -> {
-          if (!validateInputs()) {
-            event.consume();
-            errorMsg.setOpacity(1);
+          try {
+            validateInputs();
+          } catch(IllegalArgumentException e) {
+              event.consume();
+              errorMsg.setOpacity(1);
           }
         });
   }
@@ -179,8 +181,7 @@ public class AddExpenseController {
           Double.parseDouble(amountField.getText()), recurringBox.getValue(),
           categoryBox.getValue(), datePicker.getValue());
     } catch (IllegalArgumentException e) {
-      System.out.println("ok");
-      return false;
+      throw new IllegalArgumentException("Invalid input. Cannot instantiate expense", e);
     }
     return true;
   }

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

@@ -150,7 +150,9 @@ public class AddIncomeController {
   private void addEventFilters() {
     okBtn.addEventFilter(
         ActionEvent.ACTION, event -> {
-          if (!validateInputs()) {
+          try {
+            validateInputs();
+          } catch(IllegalArgumentException e) {
             event.consume();
             errorMsg.setOpacity(1);
           }
@@ -162,8 +164,7 @@ public class AddIncomeController {
           Double.parseDouble(amountField.getText()), recurringBox.getValue(),
           categoryBox.getValue(), datePicker.getValue());
     } catch (IllegalArgumentException e) {
-      System.out.println("ok");
-      return false;
+      throw new IllegalArgumentException("Invalid inputs. Cannot instantiate income", e);
     }
     return true;
   }