JavaFX - Button is not working

Question

Creating a small rpg game Oregon trail based. On controller IntroController I'm unable to make a button react inside handle, while LeaderBoardController works properly.

IntroController contains two buttons copied from LeaderBoardController.

public class Main extends Application {

    public Stage stage;

    @Override
    public void start(Stage primaryStage) {
        try {
            this.stage = primaryStage;
            initLayout();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /*
     * initLayout contains the functionality to set up the root and scene of the
     * JavaFX view using the desired FXML file, without the mess in start.
     * 
     */
    public void initLayout() {
        try {
            System.out.println("Working Directory = " + System.getProperty("user.dir"));

            Parent root = FXMLLoader.load(getClass().getResource("/fxml/Intro.fxml"));

            Scene scene = new Scene(root);
            stage.setScene(scene);
            stage.show();
            stage.setMaxHeight(500);
            stage.setMaxWidth(750);
            stage.setResizable(false);

        } catch (Exception e) {
            e.printStackTrace();
        }

    }

    /*
     * switchScene added to clean up mounts of code in regards to switching a scene usually from an actionevent. Takes in a string 
     * .fxml location and the Stage.
     */
    public void switchScene(String fxml, Stage stage) {
        try {
            Parent root = FXMLLoader.load(getClass().getClassLoader().getResource(fxml));
            Scene scene = new Scene(root);
            stage.setScene(scene);
            stage.show();
            stage.setMaxHeight(500);
            stage.setMaxWidth(750);
            stage.setResizable(false);
        } catch (IOException e) {
            // TODO handle exception
            e.printStackTrace();
            System.out.println("ERROR: Unable to open " + fxml);
            stage.close();
        }

    }

    public static void main(String[] args) {
        launch(args);

    }
}

public class IntroController implements EventHandler<ActionEvent>, Initializable {


    @FXML
    Button mainMenuButton;

    @FXML
    Button exitButton;

    @FXML
    AnchorPane background;

    @FXML
    ImageView picture;

    Main main = new Main();


    @Override
    public void initialize(URL location, ResourceBundle resources) {
        showImage("images/cilantroRiceLogo.png");
    }

    /*
     * handle is used as the primary ActionEvent handler for actions such as
     * "when" something is clicked, "then" do so.
     * 
     * @param ActionEvent event
     */
    @Override
    public void handle(ActionEvent event) {
        Button selected = (Button) event.getSource();
        Stage stage = (Stage) selected.getScene().getWindow();

    if(selected == mainMenuButton) 
        main.switchScene("fxml/Title.fxml", stage);

    if(selected == exitButton) 
        stage.close();



        background.setOnKeyPressed(e -> {
            if (e.getCode() == KeyCode.ENTER) {
                main.switchScene("fxml/Title.fxml", stage);
            }

        });

    }

    private void showImage(String imageName) {
        Image image;

        try {
            image = new Image(new FileInputStream(imageName));

            if (imageName.equals("images/cilantroRiceLogo.png"))
                picture.setImage(image);

        } catch (FileNotFoundException e) {
            // TODO handle exception!!
            e.printStackTrace();
        }
    }
}

public class LeaderboardController implements EventHandler<ActionEvent>, Initializable {

    @FXML
    Button exitButton, mainMenuButton;

    @FXML
    TableView leaderTable;

    @FXML
    TableColumn rankColumn, nameColumn, difficultyColumn, scoreColumn;

    Main main = new Main();

    private ObservableList<Score> scores = FXCollections.observableArrayList();
    private Leaderboard leaderboard;

    @Override
    public void initialize(URL arg0, ResourceBundle arg1) { 

        leaderboard = new Leaderboard();
        setScores();

        rankColumn.setCellValueFactory(new PropertyValueFactory<Score, String>("rank"));
        nameColumn.setCellValueFactory(new PropertyValueFactory<Score, String>("userName"));
        difficultyColumn.setCellValueFactory(new PropertyValueFactory<Score, String>("difficulty"));
        scoreColumn.setCellValueFactory(new PropertyValueFactory<Score, String>("finalScore"));

        leaderTable.setItems(scores);
    }

    @Override
    public void handle(ActionEvent event) {
        Button selected = (Button) event.getSource();
        Stage stage = (Stage) selected.getScene().getWindow();

        if(selected == mainMenuButton) 
            main.switchScene("fxml/Title.fxml", stage);

        if(selected == exitButton) 
            stage.close();

    }

    /**
     * populates scores with the Scores from leaderboard.scores
     */
    public void setScores() {
        for(Score score : leaderboard.getScores()) {
            scores.add(score);
        }
    }
}

Intro.fxml

<?xml version="1.0" encoding="UTF-8"?>

<?import javafx.scene.*?>
<?import javafx.scene.shape.*?>
<?import javafx.scene.text.*?>
<?import javafx.scene.control.*?>
<?import javafx.scene.image.*?>
<?import java.lang.*?>
<?import javafx.scene.layout.*?>
<?import javafx.scene.layout.AnchorPane?>

<AnchorPane xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="application.controller.IntroController">
   <children>
      <AnchorPane fx:id="background" disable="true" onKeyTyped="#handle" prefHeight="500.0" prefWidth="750.0" style="-fx-background-color: #303030;">
         <children>
            <ImageView fx:id="picture" fitHeight="327.0" fitWidth="446.0" layoutX="176.0" layoutY="25.0" onMouseClicked="#handle" pickOnBounds="true" preserveRatio="true">
            </ImageView>
            <Button fx:id="exitButton" layoutX="444.0" layoutY="387.0" maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" mnemonicParsing="false" onAction="#handle" prefHeight="60.0" prefWidth="239.0" style="-fx-background-color: #7f7f7f;" text="Exit Game">
               <cursor>
                  <Cursor fx:constant="HAND" />
               </cursor>
               <font>
                  <Font name="Magneto Bold" size="29.0" />
               </font>
            </Button>
            <Button fx:id="mainMenuButton" alignment="CENTER" layoutX="53.0" layoutY="387.0" maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" mnemonicParsing="false" onAction="#handle" prefHeight="60.0" prefWidth="239.0" style="-fx-background-color: #7f7f7f;" text="Main Menu" textAlignment="CENTER" wrapText="true">
               <cursor>
                  <Cursor fx:constant="HAND" />
               </cursor>
               <font>
                  <Font name="Magneto Bold" size="29.0" />
               </font>
            </Button>
         </children>
      </AnchorPane>
   </children>
</AnchorPane>

Leaderboard.fxml

<?xml version="1.0" encoding="UTF-8"?>

<?import javafx.scene.*?>
<?import javafx.scene.paint.*?>
<?import javafx.scene.effect.*?>
<?import javafx.scene.text.*?>
<?import javafx.scene.control.*?>
<?import java.lang.*?>
<?import javafx.scene.layout.*?>
<?import javafx.scene.layout.BorderPane?>

<AnchorPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="500.0" prefWidth="750.0" style="-fx-background-color: #000000;" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="application.controller.LeaderboardController">
   <children>
      <TableView fx:id="leaderTable" layoutX="122.0" layoutY="110.0" prefHeight="287.0" prefWidth="510.0" style="-fx-background-color: #666666; -fx-overflow-x: none;" AnchorPane.bottomAnchor="103.0" AnchorPane.topAnchor="110.0">
        <columns>
            <TableColumn fx:id="rankColumn" minWidth="20.0" prefWidth="49.0" text="Rank" />
          <TableColumn fx:id="nameColumn" editable="false" minWidth="173.0" prefWidth="232.0" resizable="false" sortable="false" text="Name" />
            <TableColumn fx:id="difficultyColumn" editable="false" minWidth="30.0" prefWidth="89.0" resizable="false" sortable="false" text="Difficulty" />
          <TableColumn fx:id="scoreColumn" editable="false" minWidth="90.0" prefWidth="138.0" resizable="false" sortType="DESCENDING" sortable="false" text="Score" />
        </columns>
         <columnResizePolicy>
            <TableView fx:constant="CONSTRAINED_RESIZE_POLICY" />
         </columnResizePolicy>
      </TableView>
      <Button fx:id="mainMenuButton" alignment="CENTER" layoutX="85.0" layoutY="419.0" maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" mnemonicParsing="false" onAction="#handle" prefHeight="60.0" prefWidth="239.0" style="-fx-background-color: #7f7f7f;" text="Main Menu" textAlignment="CENTER" wrapText="true" AnchorPane.bottomAnchor="21.0" AnchorPane.leftAnchor="85.0" AnchorPane.rightAnchor="426.0">
         <font>
            <Font name="Magneto Bold" size="29.0" />
         </font>
         <cursor>
            <Cursor fx:constant="HAND" />
         </cursor></Button>
      <Button fx:id="exitButton" layoutX="421.0" layoutY="419.0" maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" mnemonicParsing="false" onAction="#handle" prefHeight="60.0" prefWidth="239.0" style="-fx-background-color: #7f7f7f;" text="Exit Game" AnchorPane.bottomAnchor="21.0" AnchorPane.leftAnchor="426.0" AnchorPane.rightAnchor="85.0">
         <font>
            <Font name="Magneto Bold" size="29.0" />
         </font>
         <cursor>
            <Cursor fx:constant="HAND" />
         </cursor></Button>
      <Label alignment="CENTER" layoutX="169.0" layoutY="14.0" prefHeight="88.0" prefWidth="410.0" text="Leaderboard" textAlignment="CENTER" textFill="#f5f5f5" wrapText="true" AnchorPane.leftAnchor="169.0" AnchorPane.rightAnchor="171.0">
         <font>
            <Font name="Old English Text MT" size="72.0" />
         </font>
         <effect>
            <DropShadow blurType="ONE_PASS_BOX" offsetX="2.0" offsetY="2.0" />
         </effect>
      </Label>
   </children>
</AnchorPane>

Answer 1

So, this was fixed and caused by Github merging/pulling error. Something between that caused an error and broke those two specific files and by correcting that error it has been resolved.

Answer 2

It's hard to tell with out loading the project. Usually what I'd do is set the Handler in the init method and see if you can get it to trigger.

Another random thing to try is to have your handler using the base Event: https://docs.oracle.com/javase/8/javafx/api/javafx/event/Event.html.