java http request
// open a connection, the request method is "GET" by default
URL url = new URL("http://example.com");
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("GET");
connection.setRequestProperty("Content-Type", "application/json");
// you can use one of these methods to get the results
connection.connect();
connection.getResponseCode();
connection.getInputStream();
connection.getOutputStream();
// close the connection
connection.disconnect();