How to organize a server for 2-legged authorization?

Question

Java

There is Restfull Webservice. Everything is working. You need to tighten the authorization. Googling has shown that you can use the oauth protocol, namely its 2-legged version. I did not find a normal tutorial. I found this description , it says how to do it, what to check. And not a line of code.
There is this tutorial , but it is heavily tied to the Restlet library, and I have Jersey. I was looking for how to do it too, but with Jersey, I found only a brief mention that this is possible and, again, not a line of code.
You don't want to ride the horror. Could someone give a thread a link to a sane tutorial?
PS here is my previous question , unfortunately unanswered.
Thanks in advance.