setRequestProperty throwing java.lang.IllegalStateException: Cannot set request property after connection is made

Question

I am getting java.lang.IllegalStateException:

java.lang.IllegalStateException: Cannot set request property after connection is made error w

Answer 1

please check below code

HttpURLConnection httpcon = (HttpURLConnection) ((new URL("a url").openConnection()));
httpcon.setDoOutput(true);
httpcon.setRequestProperty("Content-Type", "application/json");
httpcon.setRequestProperty("Accept", "application/json");
httpcon.setRequestMethod("POST");
httpcon.connect();