sun.net.www.protocol.http.HttpURLConnection cannot be cast to javax.net.ssl.HttpsURLConnection

1. Error

   java.lang.ClassCastException: sun.net.www.protocol.http.HttpURLConnection cannot be cast to javax.net.ssl.HttpsURLConnection
   	at com.chillyfacts.com.Send_HTTP_Request.call_me(Send_HTTP_Request.java:21)
   	at com.chillyfacts.com.Send_HTTP_Request.main(Send_HTTP_Request.java:13)
   

2. You might be using

   URL obj = new URL(url);
   HttpsURLConnection con = (HttpsURLConnection) obj.openConnection();
   

   Solution,Convert it to http protocol

   URL obj = new URL(url);
   HttpURLConnection con = (HttpURLConnection) obj.openConnection();
   

   See the Example shown in this link,
   https://chillyfacts.com/java-send-http-getpost-request-and-read-json-response/