ClientLobby.fxml

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

<?import javafx.geometry.Insets?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.control.ListView?>
<?import javafx.scene.layout.BorderPane?>
<?import javafx.scene.layout.ColumnConstraints?>
<?import javafx.scene.layout.GridPane?>
<?import javafx.scene.layout.RowConstraints?>


<BorderPane prefHeight="400.0" prefWidth="600.0" xmlns="http://javafx.com/javafx/8.0.111" xmlns:fx="http://javafx.com/fxml/1" fx:controller="assignment7.ClientLobbyController">
   <center>
      <ListView fx:id="lobbyChats" prefHeight="333.0" prefWidth="400.0" BorderPane.alignment="CENTER" />
   </center>
   <right>
      <ListView fx:id="lobbyClients" prefHeight="200.0" prefWidth="200.0" BorderPane.alignment="CENTER" />
   </right>
   <bottom>
      <GridPane BorderPane.alignment="CENTER_RIGHT">
        <columnConstraints>
          <ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="100.0" />
            <ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="100.0" />
            <ColumnConstraints hgrow="SOMETIMES" maxWidth="198.0" minWidth="10.0" prefWidth="189.0" />
        </columnConstraints>
        <rowConstraints>
          <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
        </rowConstraints>
         <children>
            <Button fx:id="startChat" mnemonicParsing="false" prefHeight="31.0" prefWidth="141.0" text="Start Chatroom" GridPane.halignment="CENTER" GridPane.valignment="CENTER" />
            <Button fx:id="joinChat" alignment="CENTER" mnemonicParsing="false" prefHeight="31.0" prefWidth="132.0" text="Join Chatroom" GridPane.columnIndex="1" GridPane.halignment="LEFT" GridPane.valignment="CENTER" />
         </children>
         <padding>
            <Insets bottom="10.0" left="10.0" right="10.0" top="10.0" />
         </padding>
      </GridPane>
   </bottom>
</BorderPane>