Debug the controller part

.idea/vcs.xml

@@ -2,6 +2,5 @@
 <project version="4">
   <component name="VcsDirectoryMappings">
     <mapping directory="" vcs="Git" />
-    <mapping directory="$PROJECT_DIR$/demo" vcs="Git" />
   </component>
 </project>

src/main/java/workshop/Controller.java

@@ -1,70 +1,85 @@
 package workshop;
 
 import javafx.fxml.FXML;
+import javafx.scene.Scene;
 import javafx.scene.control.Alert;
-import javafx.scene.control.Label;
 import javafx.scene.control.Button;
+import javafx.scene.control.Label;
+
+import java.net.URL;
 
 public class Controller {
-    @FXML private Label titleLabel;
-    @FXML private Button themeToggle;
-    @FXML public Label Pro;
-    @FXML public Label Basic;
-    @FXML public Label Enterprise;
 
+    @FXML
+    private Label titleLabel;
+
+    @FXML
+    private Button themeToggle;
+
+    @FXML
+    private Label basicPrice;
+
+    @FXML
+    private Label proPrice;
+
+    @FXML
+    private Label enterprisePrice;
 
     private boolean isDark = true;
 
-    // TODO: (Optional:For Practice) Create initialize function and use it to set prices during runtime.
     @FXML
-    public void initialize()
-    {
-        Pro.setText("$12.00/ month");
-        Basic.setText("$10.99/ month");
-        Enterprise.setText("$21.99/ month");
+    public void initialize() {
+        basicPrice.setText("$10.99 / month");
+        proPrice.setText("$12.00 / month");
+        enterprisePrice.setText("$21.99 / month");
     }
 
-
-    // TODO: (Optional:For Practice) Make the plan price go 1 dollar up each time user clicks on the shop button.
     @FXML
     private void buyBasic() {
-        // TODO: Call showAlert() with a message indicating the user entered the payment gateway
         showAlert("Basic plan selected", Alert.AlertType.INFORMATION);
     }
 
     @FXML
     private void buyPro() {
-        // TODO: Call showAlert() with a message indicating the user entered the payment gateway
-        showAlert("Pro plan selected", Alert.AlertType.WARNING);
+        showAlert("Pro plan selected", Alert.AlertType.INFORMATION);
     }
 
     @FXML
     private void buyEnterprise() {
-        // TODO: Call showAlert() with a message indicating the user entered the payment gateway
-        showAlert("Enterprise plan selected", Alert.AlertType.CONFIRMATION);
+        showAlert("Enterprise plan selected", Alert.AlertType.INFORMATION);
     }
 
     @FXML
     private void toggleTheme() {
-        // TODO: Toggle the isDark flag. If dark, switch to style.css and set button text to "Switch to Light Mode"
-        // TODO: If light, switch to light.css and set button text to "Switch to Dark Mode"
-        isDark=!isDark;
-        themeToggle.getScene().getStylesheets().clear();
+        isDark = !isDark;
 
-        if(isDark)
-        {
-            themeToggle.setText("switch to light mode");
-            themeToggle.getScene().getStylesheets().add(getClass().getResource("style.css").toExternalForm());
+        Scene scene = themeToggle.getScene();
+        scene.getStylesheets().clear();
+
+        String cssFile;
+
+        if (isDark) {
+            themeToggle.setText("Switch to Light Mode");
+            cssFile = "style.css";
+        } else {
+            themeToggle.setText("Switch to Dark Mode");
+            cssFile = "light.css";
         }
-        else
-        {
-            themeToggle.setText("switch to dark mode");
-            themeToggle.getScene().getStylesheets().add(getClass().getResource("light.css").toExternalForm());
+
+        URL cssResource = getClass().getResource(cssFile);
+
+        if (cssResource != null) {
+            scene.getStylesheets().add(cssResource.toExternalForm());
+        } else {
+            System.out.println("CSS file not found: " + cssFile);
         }
     }
 
     private void showAlert(String message, Alert.AlertType alertType) {
-        // TODO: Create a new Alert of type INFORMATION with the given message and display it
-        Alert alert=new Alert(Alert.AlertType.INFORMATION,"Info Alert");
+        Alert alert = new Alert(alertType);
+        alert.setTitle("Plan Selection");
+        alert.setHeaderText(null);
+        alert.setContentText(message);
+        alert.showAndWait();
     }
 }

src/main/java/workshop/Main.java

@@ -10,7 +10,8 @@ import java.util.Scanner;
 public class Main extends Application {
     @Override
     public void start(Stage stage) throws Exception {
-        FXMLLoader fxmlLoader= new FXMLLoader(getClass().getResource("pricing fxml"));
+        FXMLLoader fxmlLoader =
+                new FXMLLoader(getClass().getResource("/workshop/pricing.fxml"));
 
         Scene scene= new Scene(fxmlLoader.load(),700,450);
         scene.getStylesheets().add(getClass().getResource("light.css").toExternalForm());