UserInterface.fxml

<?xml version="1.0" encoding="UTF-8"?>
<?import java.lang.*?>
<?import javafx.scene.*?>
<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>
<?import javafx.geometry.*?>
<?import javafx.collections.*?>
<?import javafx.scene.image.*?>
<?import javafx.scene.shape.*?>
<?import javafx.scene.Cursor?>

<BorderPane xmlns:fx="http://javafx.com/fxml" prefWidth="800" prefHeight="600" maxWidth="Infinity" maxHeight="Infinity" >
	<top>
		<VBox maxWidth="Infinity" style="-fx-background-color:#212121">
			<children>
				<HBox prefWidth="300" prefHeight="40" style="-fx-background-color:#212121" maxWidth="Infinity">
					<children>
						<ComboBox promptText="Select User" prefWidth="259" fx:id="selectuser" prefHeight="40"/>
						<Button text="+" fx:id="addUser" prefWidth="36" prefHeight="40" onAction="#addusers">
							<tooltip>
								<Tooltip text="Add User"/>
							</tooltip>
						</Button>
						<Label text="Status:" style="-fx-font-family:consolas;-fx-text-fill:white;-fx-font-size:15pt;-fx-spacing:10" />
						<Label text="Online" style="-fx-font-family:consolas;-fx-text-fill:white;-fx-font-size:15pt;" />
					</children>
				</HBox>
				<Label text="Users" style="-fx-font-family:consolas;-fx-text-fill:white;-fx-font-size:20pt;-fx-border-color:white;-fx-border-width:1 1 1 0;-fx-padding:10 10 10 10;-fx-alignment:top_left;-fx-spacing:0 0 20 0;-fx-background-color:#212121" prefWidth="310" maxWidth="300"/>

			</children>
		</VBox>
	</top>
	<center>
		<VBox prefWidth="300" style="-fx-background-color:#212121;-fx-border-width:0 1 0 0;-fx-border-color:white" alignment="top_left" fx:id="tabview" maxWidth="Infinity"> 
			<TabPane fx:id="tabPane" VBox.vgrow="always" prefHeight="600" prefWidth="300" tabClosingPolicy="unavailable" rotateGraphic="true">
			</TabPane>
		</VBox>
	</center>


	<bottom>
		<HBox alignment="center_right">
			<children>
				<TextField  promptText="Start Your conversation here!" prefWidth="600" prefHeight="30" fx:id="msgarea"/>

				<Button text="send-" prefWidth="200" prefHeight="30" fx:id="send" onAction="#sendMessage" defaultButton="true"/>
			</children>
		</HBox>
	</bottom>

</BorderPane>