sample.fxml

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

<?import javafx.scene.text.*?>
<?import javafx.scene.shape.*?>
<?import javafx.scene.control.*?>
<?import java.lang.*?>
<?import javafx.scene.layout.*?>
<?import javafx.geometry.Insets?>
<?import javafx.scene.layout.GridPane?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.control.Label?>

<AnchorPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="900.0" prefWidth="1200.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="sample.Main">
   <children>
      <Button fx:id="enterButton" layoutX="908.0" layoutY="840.0" mnemonicParsing="false" onAction="#handleButtonAction" text="Enter" />
      <Line endX="1200.0" endY="825.0" startY="825.0" />
      <TextField fx:id="input" layoutX="350.0" layoutY="840.0" prefHeight="39.0" prefWidth="500.0" promptText="Type Here!" />
      <TextArea fx:id="outScreen" layoutX="14.0" layoutY="116.0" prefHeight="692.0" prefWidth="1168.0" text="Press Enter to Start" />
   </children>
</AnchorPane>