I don't know about Krishnan but this is no help. You are posting a message in a Google group. The people in this group are from all over the world. We all come from a variety of different backgrounds. If you ask people here what is WebDriver they will know what that is. If you ask what TestNG is there are probably a lot of people here who will know what you are talk about. When you ask about build.xml it gets a little harder to put this in context. Is this build.xml you are referencing for Ant?
When you make reference to module 8 the only thing which pops to mind is the eighth tutorial in a training class. There are LITERALLY thousands of training classes around the world and I would image many of them have a module 8.
If your 'module 8' is in reference to a training class you are taking I would strongly recommend you talk to someone from the training class rather than asking the world for help.