Latest Articles

18 October 2013

In this tutorial we will see how to configure JSF in Tomcat.

Since Tomcat is not a fully fledged Java EE container we must do some additional configuration steps in order to run JSF applications. In this tutorial we will see how to do it. This tutorial consider... Read more

Java EE HTML5 WebSockets Encoder and Decoder example

10 September 2013

In this tutorial we will implement a Java EE ServerEndpoint message Encoder and Decoder in order to convert HTML5 websocket messages into Java objects (and also the reverse operation of converting Java objects into ready to be sent websocket messages).

As we have seen in previous examples a ServerEndpoint is the Java EE implementation of the server-side HTML5 websocket component: Java EE HTML5 WebSocket exampleJava EE HTML5 WebSockets with multiple ... Read more

html5 io java java-ee web websockets

Java EE HTML5 WebSockets with multiple clients example

22 August 2013

In this tutorial we will implement a message broadcast sample application using only HTML5 websockets. The server-side will be implemented with Java EE ServerEndpoint.

In the previous tutorial - Java EE HTML5 WebSocket example - we have implemented a simple Java EE WebSockets enabled application where the client sent a simple message to the server over a websocket a... Read more

html5 io java java-ee web websockets

Java EE HTML5 WebSocket example

12 August 2013

In this tutorial we will implement an HTML5 websocket resorting to the Java EE websocket implementation (ServerEndpoint).

The HTML5 specification brought the capability for web browsers to establish full-duplex TCP connections with websocket compliant servers.In other words, browsers are now able to establish a connectio... Read more

html5 io java java-ee web websockets

EJB passivation and activation example

05 August 2013

In this tutorial we will cover Java EE Stateful Session Bean passivation and activation mechanism.

Stateful Session Beans are usually coupled with some given client and - as the name states - they keep state across client invocations.Since a conversation with a client may be long-lived, and many si... Read more

activation ejb java java-ee passivation stateful

Java EE Stateful Session Bean (EJB) example

31 July 2013

In this tutorial we will see how to create a simple Stateful Session Bean (EJB) and use it in a web application context, more precisely a Java Servlet.

Stateful Session Beans - as the name states (and opposite to Stateless Session Beans) - are able to keep state across multiple calls from a given client during an established session.A Stateful EJB is... Read more

ejb java java-ee stateful

Java EE EJB transaction propagation (@TransactionAttribute) tutorial

08 July 2013

In this tutorial we will see the available transaction propagation behaviours provided by the EJB container using @TransactionAttribute annotation.

While dealing with Container Managed Transactions (CMT) in EJB, the application developer is able to declaratively define how an arbitrary call to an EJB method should behave in terms of transaction p... Read more

ejb java java-ee jpa jta tx

Java EE EJB Interceptors tutorial and example

30 June 2013

In this tutorial you will learn how to configure EJB Interceptors used to - as the name states - intercept calls to EJB methods.

Interceptors - as the name states - are components that intercepts calls to EJB methods. They may be used - for example - to implement an auditing / logging system around calls to EJB.Another usage ex... Read more

ejb interceptors java java-ee

About the author

Gonçalo Marques is a Software Engineer with several years of experience in software development and architecture definition. During this period his main focus was delivering software solutions in banking, telecommunications and governmental areas. He created the Bytes Lounge website with one ultimate goal: share his knowledge with the software development community. His main area of expertise is Java and open source.

GitHub profile: https://github.com/gonmarques

He is also the author of the WiFi File Browser Android application: