sample.fxml

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

<?import javafx.scene.control.Label?>
<?import javafx.scene.control.Slider?>
<?import javafx.scene.layout.AnchorPane?>
<?import javafx.scene.text.Font?>
<AnchorPane id="AnchorPane" maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity"
            prefHeight="500.0" prefWidth="500.0" xmlns:fx="http://javafx.com/fxml/1"
            xmlns="http://javafx.com/javafx/2.2" fx:controller="sample.Controller">
    <children>
        <Label fx:id="txtSlider" layoutX="146.0" layoutY="277.0" text="Move the Slider">
            <font>
                <Font size="30.0"/>
            </font>
        </Label>
        <Slider fx:id="slider" layoutX="136.0" layoutY="223.0" onMouseReleased="#onSliderChanged" prefHeight="54.0"
                prefWidth="228.0"/>
        <Label layoutX="206.0" layoutY="51.0" text="Slider Example"/>
    </children>
</AnchorPane>