How do you access Google service using a java client?

Question

I am developing a java application which is registered on Google Apps Engine (GAE) with the name \"searcegadget2\". I have implemented 3-legged OAut

Answer 1

Finally found,

Google Service has dependency on : guava as it is mentioned here.

Answer 2

here is an example that should help you.

I think you forgot to add some parameters like the scope.