Google Calendar API - cannot be resolved

Okay so I'm trying to run the example of configuring a Google calendar app they give here: https://developers.google.com/google-apps/calendar/instantiate

I'm using the newest version of Eclipse Classic and when I create a new project I import all the jars from the libs folder from here (as well as the three jars outside of the folder): http://code.google.com/p/google-api-java-client/wiki/APIs#Calendar_API

When I paste the example code in though I get the following errors:

com.google.api.client.googleapis.auth.oauth2.draft10 cannot be resolved
import com.google.api.client.googleapis.auth.oauth2.draft10 cannot be resolved
import com.google.api.client.googleapis.auth.oauth2.draft10 cannot be resolved
import com.google.api.client.auth.oauth2.draft10 cannot be resolved

What libraries am I missing? I've scavenged google for them and come up with empty handed.