Latest Articles

Container vs Application Managed EntityManager

22 January 2015

In this article we will cover Container vs Application Managed EntityManager (Persistence Context) and its relationship with JTA or RESOURCE LOCAL transaction management.

The Persistence Context and the Entity Manager are two core concepts of the Java Persistence API (JPA). In short: The Persistence Context is responsible for JPA entity management: When an applicatio... Read more

Package JSF Flow in a JAR file

02 January 2015

In this article we will see how to package a JSF Flow in a JAR file.

In the article JSF Flow example we have seen how to define a JSF Flow inside the same web application where it will eventually be used, basically by using the application's own folder structure. In th... Read more

flow java java-ee jsf

Java Visitor Pattern

21 December 2014

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

The Visitor Design Pattern goal is to provide a way to clearly separate domain objects from algorithms that operate over them. This way one may change the algorithms themselves without modifying the d... Read more

design-patterns java

Java 8 Date Time API

24 November 2014

In this article we will cover the Java 8 Date Time API.

Java 8 brought a completely redefined Date-Time API. One important feature - similarly to other already existing 3rd party API's - is that the great majority of the API objects that represent date and... Read more

date-time java java8

JDK Dynamic Proxies

08 November 2014

In this article we will cover JDK Dynamic Proxies along with their contribution to the Aspect Oriented Programming paradigm

JDK Dynamic Proxies allow one to create implementations of Java interfaces at runtime by the means of Reflection. A proxy may be seen as a subject that will forward method calls to target instances an... Read more

java proxy reflection

Java 8 Collect

26 October 2014

In this article we will see how to use the collect operation over Java 8 streams in order to implement functional style programming reductions.

As we have seen previously in Java 8 Reduction, the reduction provided by the reduce operation will use an accumulator function that is used to - as the name states - accumulate the current reduction ... Read more

java java8

Java 8 Reduction

15 October 2014

In this article we will cover functional programming style reductions introduced by Java 8.

Reduction assumes an important role in functional programming. It is usually executed as the last step of a sequence of functional operations that are executed over a stream of elements and produces a... Read more

java java8

Java 8 Parallel Streams

30 September 2014

In this article we will cover Java 8 Parallel Streams.

As we have seen previously in Java 8 Streams, Java 8 introduced streams as way to perform functional operations over collections of elements. In this article we will see how we may take advantage of t... Read more

java java8

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: