Calling a Servlet through a Swing using java.net.URLConnection

Servelet are simple Java classes. You can use the DocumentBuilder class to form xml request and call ur servelet's mtd passing this documentbuilder object ......

You've answered your own question in the title. Create a URL to your servlet, get a connection from it, write what you have to write and read the response. It's all there in the API.And don't do any of this in the AWT thread or your GUI will freeze.

Not really, no.

A good article on this topic can be found at http://javaboutique.internet.com/tutorials/Swing/-M