This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
Raj, I think you need to read section 5.3 of that link again. It tells you that you can have your application broken up into modules. Each of which would have its own configuration file (5.3.2 gives an example of multiple config files specified in web.xml).