Very simple chat using JGroups and JavaFX

I just wanted to share this small application using JGroups and JavaFX. JGroups is "a toolkit for reliable messaging" and one of the oldest and stable Java libraries.
The chat code I used was the same one from JGroups sample code page, we need less than 5 codes to implement all the chat functionality!

	package org.fxapps.chat;
	import org.jgroups.JChannel;
	import org.jgroups.Message;
	import javafx.application.Application;
	import javafx.application.Platform;
	import javafx.geometry.Pos;
	import javafx.scene.Scene;
	import javafx.scene.control.TextArea;
	import javafx.scene.control.TextField;
	import javafx.scene.layout.HBox;
	import javafx.scene.layout.VBox;
	import javafx.scene.text.Font;
	import javafx.scene.text.FontPosture;
	import javafx.scene.text.FontWeight;
	import javafx.stage.Stage;
	public class ChatApp extends Application {
	private static final double WIDTH = 800;
	private static final double HEIGHT = 600;
	private JChannel channel;
	private TextField txtNick = new TextField("Someone");
	private TextField txtMessage = new TextField();
	private TextArea txtLog = new TextArea();
	public static void main(String[] args) {
	launch(args);
	}
	@Override
	public void start(Stage stage) throws Exception {
	VBox root = new VBox(20);
	txtMessage.setPrefWidth(600);
	txtMessage.setOnAction(e -> sendMessage());
	txtLog.setPrefHeight(500);
	txtLog.setMaxWidth(730);
	txtLog.setEditable(true);
	txtLog.setFont(Font.font(Font.getDefault().getFamily(), FontWeight.EXTRA_LIGHT, FontPosture.ITALIC, 10));
	txtNick.setOnMouseClicked(e -> txtNick.setEditable(true));
	txtNick.setOnAction(e -> txtNick.setEditable(false));
	txtNick.editableProperty().addListener((a, b, c) -> {
	if (c)
	txtNick.setOpacity(1.0);
	else
	txtNick.setOpacity(0.5);
	});
	txtNick.setEditable(false);
	root.setAlignment(Pos.CENTER);
	root.getChildren().addAll(txtLog, new HBox(20, txtNick, txtMessage));
	stage.setScene(new Scene(root, WIDTH, HEIGHT));
	stage.setWidth(WIDTH);
	stage.setHeight(HEIGHT);
	stage.show();
	stage.setOnCloseRequest(e -> channel.close());
	start();
	}
	private void start() throws Exception {
	channel = new JChannel();
	channel.connect("ChatCluster");
	channel.setReceiver(msg -> Platform.runLater(() -> txtLog.appendText(msg.getObject())));
	}
	private void sendMessage() {
	String msgStr = txtNick.getText() + " says:" + txtMessage.getText() + "\n";
	Message msg = new Message(null, msgStr);
	try {
	channel.send(msg);
	txtMessage.setText("");
	} catch (Exception e) {
	e.printStackTrace();
	}
	}
	}

view raw ChatApp.java hosted with ❤ by GitHub

	<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<groupId>org.fxapps</groupId>
	<artifactId>simplest-chat</artifactId>
	<version>1.0</version>
	<properties>
	<maven.compiler.target>1.8</maven.compiler.target>
	<maven.compiler.source>1.8</maven.compiler.source>
	</properties>
	<dependencies>
	<dependency>
	<groupId>org.jgroups</groupId>
	<artifactId>jgroups</artifactId>
	<version>4.0.0.Final</version>
	</dependency>
	</dependencies>
	</project>

view raw pom.xml hosted with ❤ by GitHub