Is cocoon bootstrap compatible for windows 8.1 store apps? I am unable to get perfect answer. i have googled much.Kindly provide the link for reference.
It depends on what you mean: Cocoon apps use java, and there isn't a java implementation which supports Windows Store apps. You couldn't write a Windows Store app as a Cocoon app. You could host a web app or service written with Cocoon and connect to it from a Windows Store app written in Xaml & C++/C#/VB or HTML & JavaScript.
Documentation generally says what is supported rather than what isn't supported. You generally won't find links saying that something isn't supported, especially when it's not really in the same domain.