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Problem with .setText() for labels in JavaFX

raulzinho17Nov 13 2016 — edited Nov 22 2016

I am trying to change the text for a label from JavaFX, and I keep getting an error. Could anyone point out what the mistake is that I'm making?

Main Class: (Error in line 215)

package application;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Hyperlink;
import javafx.scene.control.Label;
import javafx.scene.control.TextField;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.stage.Stage;
public class MainController {
    
    @FXML
    private ImageView background;
    
    @FXML
    private ImageView makeItemImage;
    
    @FXML
    private Label lblFood;
    @FXML
    private Label lblStatus;
    
    @FXML
    private Label buttonLabel;
    
    @FXML
    private TextField txtUsername;
    
    @FXML
    private TextField txtPassword;
    
    @FXML
    private TextField txtConfirmPassword;
    
    @FXML
    private Button login;
    
    @FXML
    private Button signup;
    
    @FXML
    private Hyperlink hypSignup;
    
    @FXML
    private Label lblStatus1;
    
    @FXML
    private Label lblStatus2;
    
    @FXML
    private Button makeItem;
    
    @FXML
    private Button makeFood;
    
    private String getRank;
    private int rank;
    private String getMoney;
    private int money;
    private String getFood;
    private int food;
    private String getBread;
    private int bread;
    private String getFarmers;
    private int farmers;
    private String getBakers;
    private int bakers;
    
    
    public void Login(ActionEvent event) throws Exception {
        BufferedReader br = null;
        try {
            br = new BufferedReader(new FileReader("src/stats/userInformation.txt"));
            String line;
            
            while ((line = br.readLine()) != null) {
                if (txtUsername.getText().equals(line) && txtPassword.getText().equals(br.readLine())) {
                    br.close();
                    br = new BufferedReader(new FileReader("src/stats/"+txtUsername.getText()+".txt"));
                    getRank = br.readLine();
                    rank = Integer.parseInt(getRank);
                    lblStatus.setText("Login Successful!");
                    Stage primaryStage = new Stage();
                    
                    if (rank == 0) {
                        Parent root = FXMLLoader.load(getClass().getResource("/application/Tutorial.fxml"));
                        Scene scene = new Scene(root);
                        scene.getStylesheets().add(getClass().getResource("application.css").toExternalForm());
                        primaryStage.setScene(scene);
                        primaryStage.setTitle("Company Simulator");
                        primaryStage.show();
                        Stage stage = (Stage) login.getScene().getWindow();
                        stage.close();
                        
                        tutorial();
                        
                    } else {
                        Parent root = FXMLLoader.load(getClass().getResource("/application/Main.fxml"));
                        Scene scene = new Scene(root);
                        scene.getStylesheets().add(getClass().getResource("application.css").toExternalForm());
                        primaryStage.setScene(scene);
                        primaryStage.setTitle("Company Simulator");
                        primaryStage.show();
                        Stage stage = (Stage) login.getScene().getWindow();
                        stage.close();
                    }
                } else {
                    lblStatus.setText("Invalid Credentials...");
                }
            }
            
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                br.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        
    }
    
    public void SignupFromLogin(ActionEvent event) throws Exception {
        Stage primaryStage = new Stage();
        Parent root = FXMLLoader.load(getClass().getResource("/application/Signup.fxml"));
        Scene scene = new Scene(root);
        scene.getStylesheets().add(getClass().getResource("application.css").toExternalForm());
        primaryStage.setScene(scene);
        primaryStage.setTitle("Company Simulator");
        primaryStage.show();
        Stage stage = (Stage) hypSignup.getScene().getWindow();
        stage.close();
    }
    
    public void Signup(ActionEvent event) throws Exception {
        try {
            
        File file = new File("src/stats/userInformation.txt");
        
        if (!file.exists()) {
            file.createNewFile();
        }
        if (txtPassword.getText().equals(txtConfirmPassword.getText())) {
            File f = new File("src/stats/"+txtUsername.getText()+".txt");
            if (!f.exists()) {
                file.createNewFile();
            }
            PrintWriter pw = new PrintWriter(new FileWriter(file, true));
            pw.println(txtUsername.getText());
            pw.println(txtPassword.getText());
            pw.close();
            PrintWriter pw1 = new PrintWriter("src/stats/"+txtUsername.getText()+".txt");
            pw1.println("0");
            pw1.println("0");
            pw1.println("0");
            pw1.println("0");
            pw1.println("0");
            pw1.println("0");
            pw1.close();
    
            Stage primaryStage = new Stage();
            Parent root = FXMLLoader.load(getClass().getResource("/application/Login.fxml"));
            Scene scene = new Scene(root);
            scene.getStylesheets().add(getClass().getResource("application.css").toExternalForm());
            primaryStage.setScene(scene);
            primaryStage.setTitle("Company Simulator");
            primaryStage.show();
            Stage stage = (Stage) signup.getScene().getWindow();
            stage.close();
        } else {
            lblStatus.setText("Passwords Don't Match");
        }
        
        } catch (IOException e) {
            e.printStackTrace();
        }
        
    }
    
    public void makeFood(ActionEvent event) {
        food++;
    }
    
    public void makeBread(ActionEvent event) {
        bread++;
    }
    
    public void Startup(ActionEvent event) {
        System.out.println("Starting Up...");
    }
    
    public void tutorial() {
        int section = 0;
        food = 0;
        while (true) {
            if (section == 0) {
                lblFood.setText("Food"); //This is the setText I am having trouble with
                if (food == 10) {
                    section = 1;
                }
            } else if (section == 1) {
                Image img = new Image("/img/bread.png");
                makeItemImage.setImage(img);
                lblStatus1.setText("Press the 'Make Bread' Button!");
                lblStatus2.setText("");
                buttonLabel.setText("Make Bread");
            }
        }
    }
    
}

FXML File:

<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.image.Image?>
<?import javafx.scene.image.ImageView?>
<?import javafx.scene.layout.AnchorPane?>
<?import javafx.scene.text.Font?>
<AnchorPane prefHeight="600.0" prefWidth="800.0" xmlns="http://javafx.com/javafx/8.0.60" xmlns:fx="http://javafx.com/fxml/1" fx:controller="application.MainController">
   <children>
      <ImageView fx:id="background" fitHeight="600.0" fitWidth="800.0" pickOnBounds="true">
         <image>
            <Image url="img/CompanyBackground.png" />
         </image>
      </ImageView>
      <Label fx:id="lblStatus1" alignment="CENTER" layoutY="41.0" prefHeight="23.0" prefWidth="800.0" text="Welcome to Company Simulator! To start off, press the 'Make Food'">
         <font>
            <Font name="System Bold" size="24.0" />
         </font>
      </Label>
      <Label fx:id="lblStatus2" alignment="CENTER" layoutY="76.0" prefHeight="23.0" prefWidth="800.0" text="button!">
         <font>
            <Font name="System Bold" size="24.0" />
         </font>
      </Label>
      <Button fx:id="makeItem" layoutX="352.0" layoutY="220.0" mnemonicParsing="false" onAction="#makeFood" prefHeight="32.0" prefWidth="32.0">
         <font>
            <Font size="24.0" />
         </font>
         <graphic>
            <ImageView fx:id="makeItemImage" fitHeight="64.0" fitWidth="64.0" pickOnBounds="true">
               <image>
                  <Image url="img/food.png" />
               </image>
            </ImageView>
         </graphic>
      </Button>
      <Label fx:id="buttonLabel" layoutX="353.0" layoutY="305.0" text="Make Food">
         <font>
            <Font name="System Bold" size="18.0" />
         </font>
      </Label>
      <Label fx:id="lblFood" alignment="CENTER_RIGHT" layoutX="450.0" layoutY="120.0" prefHeight="27.0" prefWidth="350.0" text="Label" textFill="#433900">
         <font>
            <Font name="System Bold" size="18.0" />
         </font>
      </Label>
   </children>
</AnchorPane>

Error:

Exception in thread "JavaFX Application Thread" java.lang.RuntimeException: java.lang.reflect.InvocationTargetException

at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1774)

at javafx.fxml.FXMLLoader$ControllerMethodEventHandler.handle(FXMLLoader.java:1657)

at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)

at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)

at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)

at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)

at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)

at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)

at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)

at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)

at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)

at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)

at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)

at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:49)

at javafx.event.Event.fireEvent(Event.java:198)

at javafx.scene.Node.fireEvent(Node.java:8413)

at javafx.scene.control.Button.fire(Button.java:185)

at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(ButtonBehavior.java:182)

at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:96)

at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:89)

at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218)

at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80)