OSGI framework for Modular approach

[ab singh]

How to use Apache felix OSGI Framework to enabling and disabling Bundles, updating and installing bundle in client side (once product is deployed). This is mainly use for modular programming. Thanks in advance.
Some of the resources i have used but not able to figure it out.
http://felix.apache.org/documentation/subprojects/apache-felix-framework/apache-felix-framework-usage-documentation.html#web-proxy-issues-when-installing-bundles
http://www.vogella.com/tutorials/OSGi/article.html
http://www.vogella.com/tutorials/EclipseJarToPlugin/article.html
http://www.vogella.com/tutorials/EclipseInternationalization/article.html

[Tim Moores]

I suggest you decide which framework you want to use (Apache Felix or Eclipse Equinox) and then use tutorials specifically for that framework. While OSGi is an implementation independent API, each implementation will have its own quirks.

For Felix, introductory material is at http://felix.apache.org/documentation/getting-started.html

Beyond that, tell us what you tried in detail, and what the results were that differed form the tutorial, and we'll try to help.