I just want to know that which languages or tools did google use ongoogle analytics.
I mean when we insert the javascript piece of code o our web page then which piece of software ctaches that result and which langauage they do some calculation and then how do they display graphs.
If some has any idea
If you are looking at how google analytics frontend is implemented, that is most likely using Google Web Toolkit deducing by the type of interactivity there.
Each page view is sent through the embedded js to some webserver and then onto some backend servers on the google side over http. Language used for backend processing used by google should be irrelevant to you. You can pick any language of your choice for implementing similar things.