如何使用现代Java 8特性异步发出2个HTTP请求？

import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.util.concurrent.CompletableFuture;

public class AsyncHttpClientExample {
    public static void main(String[] args) throws Exception {
        HttpClient httpClient = HttpClient.newHttpClient();

        CompletableFuture<HttpResponse<String>> future1 = httpClient
                .sendAsync(HttpRequest.newBuilder()
                        .uri(URI.create("http://example.com/api/endpoint1"))
                        .build(), HttpResponse.BodyHandlers.ofString());

        CompletableFuture<HttpResponse<String>> future2 = future1.thenCompose(response1 ->
                httpClient.sendAsync(HttpRequest.newBuilder()
                        .uri(URI.create("http://example.com/api/endpoint2"))
                        .build(), HttpResponse.BodyHandlers.ofString()));

        CompletableFuture.allOf(future1, future2).join();

        System.out.println("Response 1: " + future1.get().body());
        System.out.println("Response 2: " + future2.get().body());
    }
}