Get Json / Resonse body from Curl Post Request in Java

This is the method I have written which sends a POST request to send an Email. I am able to send the email and get the Response Code 200 Ok. But I don’t know how to get the JSON Response and convert it into an Object. Can someone please tell me how to do this?

public void sendEmail() {
        try {
            URL url = new URL("https://mandrillapp.com/api/1.0/messages/send");

            HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
            httpURLConnection.setRequestMethod("POST");
            httpURLConnection.setDoOutput(true);
            httpURLConnection.setRequestProperty("Content-Type", "application/json");

            String data =
                    "{"key": "" + mailchimpApiKey + "", " +
                            ""message": {" +
                            ""from_email": "[e-mail]", " +
                            ""subject": "Hello World", " +
                            ""text": "Welcome to Mailchimp Transactional!", " +
                            ""to": [{ "email": "[e-mail]", "type": "to" }]}}";

            byte[] out = data.getBytes(StandardCharsets.UTF_8);

            OutputStream stream = httpURLConnection.getOutputStream();
            stream.write(out);

            System.out.println(httpURLConnection.getResponseCode() + " " + httpURLConnection.getResponseMessage());

            httpURLConnection.disconnect();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

Answer

A basic search reveals: https://www.baeldung.com/httpurlconnection-post#8-read-the-response-from-input-stream

try(BufferedReader br = new BufferedReader(
  new InputStreamReader(con.getInputStream(), "utf-8"))) {
    StringBuilder response = new StringBuilder();
    String responseLine = null;
    while ((responseLine = br.readLine()) != null) {
        response.append(responseLine.trim());
    }
    System.out.println(response.toString());
}

If the response is in JSON format, use any third-party JSON parsers such as Jackson library, Gson, or org.json to parse the response.