simple curl in java

Main.java

import java.util.stream.*;

import java.net.http.HttpRequest;
import java.net.http.HttpClient;
import java.net.URI;
import java.net.http.HttpResponse;
import java.net.http.HttpClient.Version;
import java.net.http.HttpRequest.BodyPublishers;
import java.net.http.HttpResponse.BodyHandlers;
import java.time.Duration;
import java.util.List;

/* Just a curl-like program for debugging purposes */
class Main {
    public static void main(String... args) {
        var url = "https://example.org";
        System.out.println("args is " + args);
        if (args.length == 0) {
            System.out.println("info - no args passed");
            System.err.println("err -no args passed");
        } else {
            url = args[0];
        }

        System.out.println("test https client send with self signed cert");
        HttpClient client = HttpClient.newBuilder().version(Version.HTTP_1_1).build();

        // k8s control plane will send a goaway if we're using java's http 2 client
        // Maybe the ciphers java has get rejected? fallbacking to http 1.1
        HttpRequest request = HttpRequest.newBuilder()
                .method("GET", BodyPublishers.noBody())
                .uri(URI.create(url)).build();
        HttpResponse<String> response;
        try {
            response = client.send(request, BodyHandlers.ofString());
            System.out.println(response.statusCode());
            System.out.println(response.body());
        } catch (Exception e) {
            // TODO: handle exception
            System.out.println(e);
        }
    }
}