How to Create Extensible Java Applications

Many applications benefit from being open to extension. This post describes two ways to implement such extensibility in Java. Extensible…

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Permissions in OSGi

In a previous post, we looked at implementing a sandbox for Java applications in which we can securely run mobile…

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Making Plain Old Java OSGi Compatible

Although OSGi is increasingly popular in the Java world, there are many Java applications and libraries that have not been…

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Extenders: Pattern or Anti-Pattern?

The extender pattern has become popular in recent years and has even been utilised in OSGi standards such as the…

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OSGi case study: a modular vert.x

OSGi enables Java code to be divided cleanly into modules known as bundles with access to code and resources controlled…

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Servlet Basic Auth in an OSGi environment

You will first need to get a reference to the OSGI HTTP Service. You can do this through a declarative…

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Understanding how OSGI bundles get resolved

I’d like to review how OSGI bundles get resolved and use Apache Karaf to demonstrate. Karaf is a full-featured OSGI…

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Learn by Errors : Java + OSGi

Recently I worked on getting Apache Hive work inside an OSGi environment. While not proving to be a proverbial piece…

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OSGI – Modularizing your application

Since I am a big proponent of modularity, low coupling, high cohesion, etc … I believe that this technology is…

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