👀 Views: 0 💬 Answers: 1 📅 Created: 2025-06-12

java javafx eclipse Java

I'm deploying to production and I tried several approaches but none seem to work... After trying multiple solutions online, I still can't figure this out. I'm experiencing a `ClassCastException` when trying to update a `TableView` in my JavaFX application using Eclipse 2023-09. The scenario arises specifically when I set a custom `CellFactory` for a column. Here's a simplified version of my code that demonstrates the question: ```java TableView<Person> tableView = new TableView<>(); TableColumn<Person, String> nameColumn = new TableColumn<>("Name"); nameColumn.setCellValueFactory(cellData -> new SimpleStringProperty(cellData.getValue().getName())); nameColumn.setCellFactory(column -> new TableCell<Person, String>() { @Override protected void updateItem(String item, boolean empty) { super.updateItem(item, empty); if (empty || item == null) { setText(null); setGraphic(null); } else { setText(item); // Imaginary method that returns a Node based on item setGraphic(createGraphicForItem(item)); } } }); tableView.getColumns().add(nameColumn); ``` When I run the application, I receive the following behavior: ``` Exception in thread "JavaFX Application Thread" java.lang.ClassCastException: class java.lang.String want to be cast to class javafx.scene.Node ``` I've checked the `createGraphicForItem` method to ensure it returns a `Node`, and it looks like this: ```java private Node createGraphicForItem(String item) { // This returns a Label which is a Node return new Label(item); } ``` I've also verified that the `item` parameter being passed to `createGraphicForItem` is indeed a valid `String`. What could be causing this `ClassCastException`? I’ve tried cleaning and rebuilding the project, ensuring that all JavaFX libraries are correctly added to my build path, and I’m using JDK 17 along with the latest JavaFX SDK. Any assistance would be greatly appreciated! My development environment is Ubuntu. I'd really appreciate any guidance on this. My development environment is Linux. I'm developing on Ubuntu 20.04 with Java. What am I doing wrong? Thanks in advance!