Load Exception in fxml - javafx

Question

I want my inventory_layout to load when i click on the first button but i am getting load exception there while the same code works fine with other fxmls.
Path of controller is right.
fxml is in the right place.
Here is my code- Inventory
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.scene.Scene;
import javafx.scene.layout.AnchorPane;
import javafx.scene.layout.Border;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.Pane;
import javafx.stage.Modality;
import javafx.stage.Stage;
import pharmbooks.Utils.DbSingleton;
import pharmbooks.Utils.UIController;
import java.io.IOException;
public class MainController {
#FXML
private BorderPane borderPane;
#FXML
public void initInventory(ActionEvent actionEvent) throws IOException{
UIController<InventoryController> uiController=new UIController<InventoryController>();
uiController.setUp(borderPane,"inventory_layout.fxml");
}
public void initPurchase(ActionEvent actionEvent) throws IOException{
UIController<PurchaseController> uiController=new UIController<>();
uiController.setUp(borderPane,"purchase_layout.fxml");
}
}
Ui Controller
public class UIController<T> {
private T controller;
private Pane pane;
public T getController() {
return controller;
}
public void setUp(Pane mainPane,String fxmlLocation){
try {
FXMLLoader loader = new FXMLLoader();
loader.setLocation(getClass().getClassLoader().getResource(fxmlLocation));
pane = loader.load();
controller = loader.getController();
mainPane.getChildren().clear();
mainPane.getChildren().add(pane);
}catch (Exception e){
System.out.println(UIController.class.getSimpleName()+" "+e.toString());
}
} }
This code works well in ubuntu though :/
here is the error :
UIController javafx.fxml.LoadException:
/Users/manyamadan/Desktop/Everything/pharmbooks-v2/target/classes/inventory_layout.fxml
Inventory controller :
public class InventoryController implements Initializable{
public TableColumn batchId;
public TableColumn company;
public TableColumn name;
public TableColumn packing;
public TableColumn quantity;
public TableColumn expiry;
public TableColumn mrp;
#FXML
private TableView<Inventory> personTable;
public void InventoryController()
{
}
public void initialize(URL location, ResourceBundle resources) {
batchId.setCellValueFactory(new PropertyValueFactory<Inventory, String>("BATCH_ID"));
company.setCellValueFactory(new PropertyValueFactory<Inventory, String>("COMPANY"));
name.setCellValueFactory(new PropertyValueFactory<Inventory, String>("PRODUCT_NAME"));
packing.setCellValueFactory(new PropertyValueFactory<Inventory, String>("PACKING"));
quantity.setCellValueFactory(new PropertyValueFactory<Inventory, Integer>("QUANTITY"));
expiry.setCellValueFactory(new PropertyValueFactory<Inventory, String>("EXPIRY_DATE"));
mrp.setCellValueFactory(new PropertyValueFactory<Inventory, String>("MRP"));
personTable.setEditable(true);
personTable.setItems(InventoryData.getInstance().getList());
// name.setOnEditCommit(TableColumn.CellEditEvent(Inventory,String)event);
Inventory inventory_data = personTable.getSelectionModel().getSelectedItem();
System.out.println(inventory_data.getPRODUCT_NAME()+ "" + inventory_data.getBATCH_ID());
personTable.setOnKeyPressed(event -> {
TablePosition<Inventory, ?> pos = personTable.getFocusModel().getFocusedCell() ;
if (pos != null) {
AnchorPane anchorPane= null;
try {
anchorPane = FXMLLoader.load(getClass().getClassLoader().getResource("edit_inventory_data.fxml"));
} catch (IOException e) {
e.printStackTrace();
}
Stage stage=new Stage();
stage.setTitle("Apna Dialog");
stage.initModality(Modality.WINDOW_MODAL);
stage.initOwner(StageManager.getInstance().getPrimaryStage());
Scene scene = new Scene(anchorPane);
stage.setScene(scene);
stage.showAndWait();
}
});
name.setOnEditCommit(new EventHandler<TableColumn.CellEditEvent<Inventory, String>>() {
#Override
public void handle(TableColumn.CellEditEvent<Inventory, String> t) {
System.out.println("ON edit commit" + t);
((Inventory) t.getTableView().getItems().get(
t.getTablePosition().getRow())).setPRODUCT_NAME(t.getNewValue());
}
}
);
}
#FXML
public void addData(ActionEvent actionEvent) throws IOException {
AnchorPane anchorPane= FXMLLoader.load(getClass().getClassLoader().getResource("add_data_inventory.fxml"));
Stage stage=new Stage();
stage.setTitle("Apna Dialog");
stage.initModality(Modality.WINDOW_MODAL);
stage.initOwner(StageManager.getInstance().getPrimaryStage());
Scene scene = new Scene(anchorPane);
stage.setScene(scene);
stage.showAndWait();
personTable.setItems(InventoryData.getInstance().getList());
}
}
inventory_layout.fxml
<?import javafx.geometry.Insets?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.control.TableColumn?>
<?import javafx.scene.control.TableView?>
<?import javafx.scene.control.TextField?>
<?import javafx.scene.layout.BorderPane?>
<?import javafx.scene.layout.HBox?>
<BorderPane maxHeight="600.0" maxWidth="800.0" prefHeight="600.0" prefWidth="800.0" stylesheets="#beautify_inventory.css" xmlns="http://javafx.com/javafx/8.0.65" xmlns:fx="http://javafx.com/fxml/1" fx:controller="pharmbooks.controllers.InventoryController">
<center>
<TableView fx:id="personTable" prefWidth="10000.0" BorderPane.alignment="CENTER">
<columns>
<TableColumn fx:id="batchId" prefWidth="75.0" text="BatchId" />
<TableColumn fx:id="packing" prefWidth="75.0" text="packing" />
<TableColumn fx:id="quantity" prefWidth="75.0" text="quantity" />
<TableColumn fx:id="expiry" prefWidth="75.0" text="expiry" />
<TableColumn fx:id="mrp" prefWidth="75.0" text="mrp" />
</columns>
</TableView>
</center>
<top>
<HBox prefHeight="67.0" prefWidth="800.0" BorderPane.alignment="CENTER">
<children>
<TextField prefHeight="47.0" prefWidth="163.00009155273438">
<HBox.margin>
<Insets bottom="10.0" left="10.0" right="10.0" top="10.0" />
</HBox.margin>
</TextField>
<Button mnemonicParsing="false" onAction="#addData" text="Button">
<HBox.margin>
<Insets bottom="20.0" left="20.0" right="20.0" top="20.0" />
</HBox.margin>
</Button>
<Button mnemonicParsing="false" prefHeight="39.0" prefWidth="121.0" text="Button">
<HBox.margin>
<Insets bottom="20.0" right="20.0" top="20.0" />
</HBox.margin>
</Button>
<Button mnemonicParsing="false" prefHeight="39.0" prefWidth="129.0" text="Button">
<HBox.margin>
<Insets bottom="20.0" top="20.0" />
</HBox.margin>
</Button>
</children>
</HBox>
</top>
</BorderPane>

Answer 1

In inventory_layout.fxml you set fx:id attribute to all table columns:
<TableColumn fx:id="batchId" prefWidth="75.0" text="BatchId" />
<TableColumn fx:id="packing" prefWidth="75.0" text="packing" />
<TableColumn fx:id="quantity" prefWidth="75.0" text="quantity" />
<TableColumn fx:id="expiry" prefWidth="75.0" text="expiry" />
<TableColumn fx:id="mrp" prefWidth="75.0" text="mrp" />
but in InventoryController you does not annotate this components with #FXML. Witout this annotations FXMLLoader will not be able to inject correct objects to controller. Correct code:
#FXML
public TableColumn batchId;
#FXML
public TableColumn company;
#FXML
public TableColumn name;
#FXML
public TableColumn packing;
#FXML
public TableColumn quantity;
#FXML
public TableColumn expiry;
#FXML
public TableColumn mrp;
I'm guessing that you get NullPointerException in initalize() method when you try to setCellValueFactory() on table columns.
I assume that you are accessing fxml resource files correctly.