Java:
Надсилання HTTP-запиту з базовою автентифікацією

import java.net.Authenticator;
import java.net.PasswordAuthentication;
import java.net.URL;
import java.net.HttpURLConnection;
import java.util.Base64;

public class BasicAuth {
    public static void main(String[] args) {
        try {
            String webPage = "http://example.com/api/data";
            String name = "user";
            String password = "passwd";

            String authString = name + ":" + password;
            String encodedAuthString = Base64.getEncoder().encodeToString(authString.getBytes());

            URL url = new URL(webPage);
            HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
            urlConnection.setRequestProperty("Authorization", "Basic " + encodedAuthString);

            // Handle the response as necessary
            System.out.println("Response code: " + urlConnection.getResponseCode());
            // Other response handling code goes here

        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}