Latest Articles

22 November 2013

In this tutorial we will see how to use JSF panelGroup as a container to other JSF components.

JSF panelGroup may be used as a container to other JSF components. Basically it will render a div or a span depending on the configuration we set. Read more

Java explicit lock example

17 November 2013

In this tutorial we will implement an explicit lock in Java using the synchronized statement together with the wait/notify idiom.

Before Java 5 - where the java.util.concurrent package concurrency facilities were introduced - we had to implement locking mechanisms from scratch. Even now when Java already offers a robust locking ... Read more

concurrency java

Java synchronized example

09 November 2013

In this tutorial we will see how to use the synchronized modifier in Java.

Synchronization plays a key role in applications where multiple threads tend to share the same resources, especially if these resources must keep some kind of sensitive state where manipulations done ... Read more

concurrency java

JSF commandButton example

02 November 2013

This tutorial belongs to a series of articles that will describe the available UI controls and components in JSF. In this article we will cover JSF commandButton.

We start this article by defining a JSF view containing a simple form. The form submission will be triggered by a commandButton: commandButton example <!DOCTYPE html> <html xmlns="htt... Read more

java-ee jsf mvc web

How to cache component rendering in JSF example

29 October 2013

In this tutorial we will see how to cache component rendering in JSF.

Caching mechanisms are commonly used in web applications, especially when we have sections of a web page that are frequently accessed and the displayed content within those sections is not subject to ... Read more

java-ee jsf mvc omnifaces web

How to remove included resources in JSF example

23 October 2013

In this tutorial we will see how to remove included resources (like JavaScript and CSS style sheets) in JSF.

Sometimes one may need to remove resources included by JSF like JavaScript files or CSS style sheets. The resources may be the ones included by JSF itself or by some other external library like Primef... Read more

java-ee jsf mvc web

How to configure JSF in Tomcat example

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 jsf mvc tomcat web

Android fixed Header and Footer with scrollable content layout example

05 October 2013

In this tutorial we will create an Android fixed Header and Footer with scrollable content activity layout.

Application user-interfaces that require a fixed header and footer are easy to implement in the Android development ecosystem. One may also need the content to be scrollable in case it does not fit be... Read more

android java user-interface

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: