Java Utililty Methods HTTP Get Json

JSONObject job = null;
conn.setRequestMethod("GET");
OutputStream os = conn.getOutputStream();
conn.connect();
BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
StringBuffer sb = new StringBuffer();
String s = "";
while ((s = in.readLine()) != null) {
...

ObjectMapper mapper = new ObjectMapper();
String jsonStr = get(url);
return mapper.readTree(jsonStr);

String body = get(url);
JSONTokener tokener = new JSONTokener(body);
return new JSONObject(tokener);