<POST> Chat API

import java.io.OutputStream;
import java.io.InputStreamReader;
import java.io.BufferedReader;
import java.net.HttpURLConnection;
import java.net.URL;
 
public class ChatRequest {
    public static void main(String[] args) {
        try {
        
            String urlString = "{guardian_url}/chat/{app_name}";
            String jsonInputString = "{\"prompt\": \"String\"}";
 
            URL url = new URL(urlString);

            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
 
            conn.setRequestMethod("POST");
            conn.setRequestProperty("Accept", "application/json");
            conn.setRequestProperty("Content-Type", "application/json");
            conn.setDoOutput(true);
 
            
            try (OutputStream os = conn.getOutputStream()) {
                byte[] input = jsonInputString.getBytes("utf-8");
                os.write(input, 0, input.length);
            }
 
            int code = conn.getResponseCode();
            try (BufferedReader br = new BufferedReader(new InputStreamReader(
                    conn.getInputStream(), "utf-8"))) {
                StringBuilder response = new StringBuilder();
                String responseLine;
                while ((responseLine = br.readLine()) != null) {
                    response.append(responseLine.trim());
                }
                System.out.println("Response Code: " + code);
                System.out.println("Response: " + response.toString());
            }
 
            conn.disconnect();
 
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}