如何在其他修改其值的操作中添加列數據

Question

如何將TableView的一列的數據添加到其他同一個表中，但執行x操作（如添加5）？

在我的情況下，我想添加到outTaxColumn inTaxColumn * 0.79的數據。

這裏是控制器

//Imports 

public class ControladorView implements Initializable { 

    @FXML private TableView tableViewBudget; 
    @FXML private TableColumn<Product, String> nameBudgetColumn; 
    @FXML private TableColumn<Product, Double> outTaxColumn; 
    @FXML private TableColumn<Product, Double> inTaxColumn; 
    @FXML private TableColumn<Product, Integer> quantityColumn; 

    private ObservableList<Product> budgetData; 

    @Override 
    public void initialize(URL location, ResourceBundle resources) { 

     //Budget Table 
     nameBudgetColumn.setCellValueFactory(
      new PropertyValueFactory<>("description")); 
     inTaxColumn.setCellValueFactory(
      new PropertyValueFactory<>("price")); 

     budgetData = FXCollections.observableArrayList(); 
     tableViewBudget.setItems(budgetData); 
} 

產品類：

public class Product { 
    public enum Category { 
     SPEAKER, HDD, HDD_SSD, POWER_SUPPLY, DVD_WRITER, RAM, SCREEN, 
     MULTIREADER, MOTHERBOARD, CPU, MOUSE, GPU, KEYBOARD, CASE, FAN 
    } 

    public Product(String description, double price, int stock, Category category) { 
     this.description = description; 
     this.price = price; 
     this.stock = stock; 
     this.category = category; 
    } 

    public Category getCategory() { 
     return category; 
    } 

    public String getDescription() { 
     return description; 
    } 

    public double getPrice() { 
     return price; 
    } 

    public int getStock() { 
     return stock; 
    } 

    private final String description; 
    private final double price; 
    private final int stock; 
    private final Category category; 
} 

Answer 1

你可以做

outTaxColumn.setCellValueFactory(cellData -> 
    new SimpleDoubleProperty(cellData.getValue().getPrice() * 0.79).asObject());