I would like to go through design pattern article citing practical example. however the articles that I have come across mostly use Swing. I would like to have article without using Swing.if I can be referred some useful links, it will be helpful
Design patterns are not specific to a language; they are part of the programming paradigm. Look for books eg Gang of Four (Gamma Helm Johnson and Vlissides), Shalloway and Trott, and also look for "anti-pattern" books. You may be able to find pattern tutorials on the web.
Remember: a pattern is a combination of software which has been found, by experience, to work well, and an anti-pattern is something which doesn't work well.