How to open a class Source code given class full name

Hi,

I'm new to InteliJ Idea Plugin development.

I've a requirement to open the souce code given the class full name in the editor.Much like what Ctrl+N does.
Class can be Java library class or can belong to some open project in Idea.

I need to do this from ApplicationComponent.

Can anyone provide some pointers on how to go ahead with this.

Regards
pradyumna