JSON Object Error in JAVA
===

Hey I am following the fbconnect module tutorial [here][1] to implement login with facbook functionality 
I have this action in my User Model

    public static void facebookOAuthCallback(JsonObject data){
	 String email = data.get("email").getAsString();
	 User user = findByEmail(email);
	if(user == null){
		user = new User();
		user.email = email;
		user.insert();
	}
	Session.current().put("user", user.email);
    }

I get this error. Do i need to import something?
**The file /app/models/User.java could not be compiled. Error raised is : JsonObject cannot be resolved to a type**

Any ideas

Thanks


  [1]: http://www.playframework.org/modules/fbconnect-0.4/home