how to implement http request in java code example

Example: 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();