Java:
Envoi d'une requête HTTP avec authentification de base

import java.io.IOException;
import java.net.Authenticator;
import java.net.PasswordAuthentication;
import java.net.URL;
import javax.net.ssl.HttpsURLConnection;
import java.util.Base64;

public class HttpBasicAuth {
    
    public static void main(String[] args) throws IOException {
        String url = "https://example.com/api";
        String username = "user";
        String password = "pass";
        
        String auth = username + ":" + password;
        String encodedAuth = Base64.getEncoder().encodeToString(auth.getBytes());

        URL urlObject = new URL(url);
        HttpsURLConnection connection = (HttpsURLConnection) urlObject.openConnection();
        connection.setRequestProperty("Authorization", "Basic " + encodedAuth);

        int responseCode = connection.getResponseCode();
        System.out.println("Response Code: " + responseCode);
        // Handle input stream here to read the response
    }
}