Java basic http client API Geo (Java 11+)

App.java

package com.demo.HttpClientDemo;

// Package Jar issue de https://github.com/stleary/JSON-java
import org.json.JSONArray;
import org.json.JSONObject;

import java.net.URI;
import java.net.http.HttpClient; // < New in Java 11, can also handle HTTP/2 requests!
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;

/**
 * Hello API Découpage Administratif!
 *
 */
public class App 
{
    public static void main( String[] args )
    {
        String url = "https://geo.api.gouv.fr/communes?nom=Montpellier";

        HttpClient client = HttpClient.newHttpClient();
        HttpRequest request = HttpRequest.newBuilder()
                .uri(URI.create(url))
                .build();

        try {
            client.sendAsync(request, HttpResponse.BodyHandlers.ofString())
                    .thenApply(HttpResponse::body)
                    .thenApply(App::parse)
                    .join();
        } catch(Exception e) {
            System.out.println("ERROR!");
            System.out.println(e);
        }
        
    }
    public static String parse(String responseBody) {
    	JSONArray communes = new JSONArray(responseBody);

        try {
            for (int i = 0; i < communes.length(); i++) {
            	JSONObject commune = communes.getJSONObject(i);
            	String nom = commune.getString("nom");
                String code = commune.getString("code");
                String codeDepartement = commune.getString("codeDepartement");
                String siren = commune.getString("siren");
                String codeEpci = commune.getString("codeEpci");
                int population = commune.getInt("population");
                System.out.println("Nom: " + nom);
                System.out.println("Code: " + code);
                System.out.println("Code du département: " + codeDepartement);
                System.out.println("Code SIREN: " + siren);
                System.out.println("Code de l'EPCI: " + codeEpci);
                System.out.println("Population: " + population);
                System.out.println("---");
            }
        } catch(Exception e){
            System.out.println(e);
        }
        return null;
    }
}