Check operationId, store in map

check-operationId.java

BufferedReader inputReader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
String inputLine;
StringBuffer response = new StringBuffer();
while ((inputLine = inputReader.readLine()) != null) {
    response.append(inputLine);
}
inputReader.close();

JSONObject jsonResponse = (JSONObject) JSONValue.parse(response.toString());
String operationId = (String) jsonResponse.get("operationId");
pendingOperations.put(operationId, sessionId);