Direct Web Remoting

With DWR (Direct Web Remoting), the developer can eliminate all of the machinery of the Ajax request-response cycle from an application code.

Using this methods will eliminate XMLHTTP requests objects or dealing with a server response from the client-side coding procedure.

The programmer won't need to write object serialization code or use third-party tools to turn objects into XML.

He won't even need to write servlet code to mediate Ajax requests into calls on your Java domain objects.