Latest Articles

EJB multiple datasource transaction example

08 May 2014

In this article we will see how to configure EJB transactions across multiple datasources

Sometimes we may need our EJB transactions to spawn across multiple datasources. For this to be possible one must take advantage of the enterprise container Transaction Manager and the Java transactio... Read more

How to configure Java 8 in Eclipse IDE

02 May 2014

In this article we will configure Java 8 in Eclipse IDE.

First you will need to download the following prerequisites (if you haven't already): Download the Java 8 JDK/JRE from Oracle download website Download Eclipse Kepler or later (in this article I hav... Read more

configuration eclipse java java8

Java EE CDI Extension example

26 April 2014

In this article we will see how to implement a Java EE CDI portable extension from scratch. CDI extensions are used mainly by framework developers (ex: Apache DeltaSpike project, the former MyFaces CODI).

Java EE CDI portable extensions is an API that provides the means for an application to listen for specific CDI container initialization events and act accordingly, like completely modify CDI beans me... Read more

cdi cdi-extensions java-ee

Java Adapter Pattern example

16 April 2014

In this tutorial we will see how to implement the Adapter design pattern in Java.

The Adapter Design Pattern is a structural pattern that, as the name states, provides a way of adapting an existing interface into another one that is expected instead. This pattern provides a way of ... Read more

design-patterns java

Java EE - Add CDI Interceptor programmatically

08 April 2014

In this article we will see how to programmatically add a CDI interceptor to a CDI managed bean.

Java EE interceptors may be used along with CDI managed beans. This means that one may use an interceptor in order to intercept calls to CDI managed beans methods and do some pre or post processing in... Read more

cdi cdi-extensions interceptors java-ee

Java Builder Pattern example

20 March 2014

In this tutorial we will see how to implement the Builder design pattern in Java.

The Builder Design Pattern is a creational pattern that solves the problem of excessive constructor overloading (or telescoping constructor), where the number of required constructors grows exponentia... Read more

design-patterns java

JSF composite component example

13 March 2014

In this article we will implement a custom composite component in JSF.

JSF provides all the required infrastructure for creating composite components. These components may be defined using only XML, only Java, or a combination of both, depending on the complexity of the ... Read more

java-ee jsf jsf-components web

Java Strategy Pattern example

05 March 2014

In this article we will see how to implement the Strategy design pattern in Java.

The Strategy Design Pattern provides the ability of selecting a specific algorithm from a family of similar algorithms at runtime in order to complete a given task. The concrete algorithm implementati... Read more

design-patterns java

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: