Can't compile subclass of com.android.volley.Request

gson_request.rb

class GsonRequest < Com::Android::Volley::Request
  def deliverResponse(response)
    # listener.onResponse(response)
  end
  def parseNetworkResponse(response)
    # raise "Not implemented"
  end
end

# ./build/Development-19/java/com/magoosh/prep/development/GsonRequest.java:4: error: no suitable constructor found for Request(no arguments)
# public class GsonRequest extends com.android.volley.Request {
#        ^
#     constructor Request.Request(String,ErrorListener) is not applicable
#       (actual and formal argument lists differ in length)
#     constructor Request.Request(int,String,ErrorListener) is not applicable
#       (actual and formal argument lists differ in length)