Setup your application's code

<dependency>
  <groupId>com.auth0</groupId>
  <artifactId>auth0-spring-security-api</artifactId>
  <version>1.0.0-rc.2</version>
</dependency>

Add the following lines to your base code

import org.springframework.stereotype.Component;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
@Component
public class SecuredPingController {
  @RequestMapping(value = "/secured/ping")
  @ResponseBody
  public String securedPing() {
    return "All good. You only get this message if you're authenticated";
  }
}

Create an Application in Auth0 dashboard 

Create a Social RenRen Connection under Connections / Social section