CODE EXAMPLE FOR JAVA

how-to-use-volley-string-request-in-android

String uri = String.format("http://somesite.com/some_endpoint.php?param1=%1$s¶m2=%2$s",
                           num1,
                           num2);

StringRequest myReq = new StringRequest(Method.GET,
                                        uri,
                                        createMyReqSuccessListener(),
                                        createMyReqErrorListener());
queue.add(myReq);