Getting Started

What is OSGi and How Apache Felix, Apache Karaf, Equinox, Knopflerfish, Virgo, Blueprint and Pax Exam are related to OSGi?

OSGi stands for Open Service Gateway initiative. The OSGi specification describes means to achieve better modularity when using Java. Applications or components come in the form of bundles, and these bundles can be remotely installed, started, stopped, updated, and uninstalled without requiring a reboot. 

Getting Started with Gradle in Windows OS - Hello World Build

We will download, install and configure gradle, and then execute a simple program.



  1. Gradle 1.x requires a Java JDK 5 or higher to be installed and the location needs to be added to an environment variable JAVA_HOME. 

  2. Gradle 2.x requires a Java JDK 6 or higher to be installed and the location needs to be added to an environment variable JAVA_HOME. 

Gradle Basics (Theory)

Gradle is a project automation tool designed for large multi-project builds that builds upon the concepts of Ant and Maven, and introduces a Groovy-based domain-specific language (DSL) instead of traditional XML form of declaring the project configuration.

Introduction to HTML5 WebSockets

WebSocket is a TCP-based protocol like HTTP which is part of HTML 5 specification. Unlike HTTP which is a request response synchronous protocol, WebSocket provides a two way (full-duplex) communications channel over a single TCP connection and messages (textual and binary) can be sent between client and server asynchronously without the overhead of HTTP request/response life cycle.

JavaFX HelloWorld Command line Program without Eclipse Plugin & Scene builder

We will write a simple JavaFX application that displays a “Hello World” button. We will handle any button click events to print “Hello World” in the console. The program can be run from command line or from an IDE like eclipse, but without the Eclipse Plugin for JavaFX and Scene builder.



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