HTTPDemo.java

import java.io.File;
import java.net.URI;
import java.util.Scanner;
import java.time.Duration;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.Files;
import java.io.InputStream;
import java.io.FileOutputStream​;
import java.net.Authenticator;
import java.net.ProxySelector;
import java.net.HttpURLConnection;
import java.net.http.HttpResponse;
import java.net.http.HttpRequest;
import java.net.http.HttpClient;
import static java.lang.System.out;
import java.nio.file.StandardOpenOption;
import java.nio.file.StandardCopyOption;

public class HTTPDemo {
    private static final String API_ENDPOINT = "https://onyxfx-api.herokuapp.com/nbaBasicStatBean?";
    private static final String API_ENDPOINT2 = "http://api.giphy.com/v1/gifs/";
    private static final String API_ENDPOINT2_ID = "yoJC2COHSxjIqadyZW";
    private static final String API_ENDPOINT2_KEY = "ZtFzb5dH6w9aYjoffJQ0RqlAsS5s0xwR";
    private static final HttpResponse.BodyHandler<String> asString = HttpResponse.BodyHandlers.ofString();
    private static final HttpResponse.BodyHandler<Void> asDiscarded = HttpResponse.BodyHandlers.discarding();
    private static final HttpResponse.BodyHandler<InputStream> asInputStream= HttpResponse.BodyHandlers.ofInputStream();
    private static final HttpClient HTTP_CLIENT = HttpClient.newBuilder()
                            .version(HttpClient.Version.HTTP_2)
                            .followRedirects(HttpClient.Redirect.NORMAL)
                            .proxy(ProxySelector.getDefault())
                            .build();

    //main
    public static void main (String[] args) {

        //so pedantic of java that we have to do this....
        String firstName = null;
        String surname = null;
        String season1 = null;
        String season2 = null;
            
        if (args.length == 4) {
            firstName = args[0]; // NBA Player first name
            surname = args[1];  // NBA Player last name
            season1 = args[2];  // Inquired Season #1
            season2 = args[3];  // Inquired Season #2
        }
        else {
            out.println("An invalid amount of arguments was supplied.");
            return;
        }

        out.println("---------------------------------");

        try {
            
            // HTTP GET Request, Response (Pre-Java 11 API) 
            {
                //HTTP GET REQUEST
                var HTTP_CLIENT= (HttpURLConnection) 
                                    URI.create(
                                        new StringBuilder(HTTPDemo.API_ENDPOINT)
                                        .append("firstName=").append(firstName)
                                        .append("&surname=").append(surname)
                                        .append("&season=").append(season1)
                                        .toString())
                                    .toURL()
                                    .openConnection();
                HTTP_CLIENT.setRequestMethod("GET");
                
                var HTTP_CLIENT2 = (HttpURLConnection)
                                    URI.create( //Set the appropriate endpoint
                                        new StringBuilder(HTTPDemo.API_ENDPOINT2)
                                        .append(HTTPDemo.API_ENDPOINT2_ID)
                                        .append("?api_key=").append(API_ENDPOINT2_KEY)
                                        .append("&data")
                                        .append("&type")
                                        .append("&images")
                                        .toString() )
                                    .toURL()
                                    .openConnection();
                HTTP_CLIENT2.setRequestMethod("GET");

                
                //HTTP RESPONSE
                var HTTP_RESPONSE = HTTP_CLIENT.getInputStream();
                var scn = new Scanner(HTTP_RESPONSE);
                var json_sb = new StringBuilder();
                while (scn.hasNext()) {
                    json_sb.append(scn.next());
                }
                var JSON = json_sb.toString();
                
                if (HTTP_CLIENT2.getContentType().contains("json")) {
                    var stream_in = (InputStream​)(HTTP_CLIENT2.getContent());
                    var stream_out = new FileOutputStream​ (new File("response1.json"));
                    stream_in.transferTo(stream_out);
                    stream_in.close();
                    stream_out.close();
                }
                else
                    return; // suffice for now.

                // HTTP STATUS
                var statusCode = HTTP_CLIENT.getResponseCode();
                var statusCode2 = HTTP_CLIENT2.getResponseCode();
                
                // HANDLE RESPONSE
                if (statusCode == 200 || statusCode == 201)
                    out.println("Success! -- Pre-Java 11 REST API Call\n" + 
                        surname + ", " + firstName + " [" + season1 +"]\n" + JSON);
                else
                    out.println("Failure! -- Pre-Java 11 REST API Call");
                
                out.println("---------------------------------");

                if (statusCode2 == 200 || statusCode2 == 201) {
                    out.println("Success! -- Pre-Java 11 REST API Call\n" + "Let's download the file!" );
                }
                else
                    out.println("Failure! -- Pre-Java 11 REST API Call");
            };
            
            out.println("---------------------------------");
                
            // HTTP GET Request, Response (Java 11 APIs) 
            {
                // HTTP GET REQUEST 
                var HTTP_REQUEST = HttpRequest.newBuilder()
                    .uri(URI.create( //Set the appropriate endpoint
                            new StringBuilder(HTTPDemo.API_ENDPOINT)
                            .append("firstName=").append(firstName)
                            .append("&surname=").append(surname)
                            .append("&season=").append(season2)
                            .toString() ) )
                    .timeout(Duration.ofMinutes(1))
                    .header("Content-Type", "application/json")
                    .build();              
                var HTTP_REQUEST2 = HttpRequest.newBuilder()
                    .uri(URI.create( //Set the appropriate endpoint
                            new StringBuilder(HTTPDemo.API_ENDPOINT2)
                            .append(HTTPDemo.API_ENDPOINT2_ID)
                            .append("?api_key=").append(API_ENDPOINT2_KEY)
                            .append("&data")
                            .append("&type")
                            .append("&images")
                            .toString() ) )
                    .timeout(Duration.ofMinutes(1))
                    .header("Content-Type", "application/json")
                    .build();


                // SEND HTTP GET REQUEST, RECIEVE OBJECT FOR HTTP GET RESPONSE 
                var HTTP_RESPONSE = HTTPDemo.HTTP_CLIENT.send(HTTP_REQUEST, asString);
                var HTTP_RESPONSE2 = HTTPDemo.HTTP_CLIENT.send(HTTP_REQUEST, asDiscarded);
                var HTTP_RESPONSE3 = HTTPDemo.HTTP_CLIENT.send(HTTP_REQUEST2, asInputStream);
                
                // HTTP STATUS CODE 
                var statusCode = HTTP_RESPONSE.statusCode();
                var statusCode2 = HTTP_RESPONSE2.statusCode();
                var statusCode3 = HTTP_RESPONSE3.statusCode();
                
                
                // HANDLE RESPONSE
                if (statusCode == 200 || statusCode == 201)
                    out.println("Success! -- Java 11 REST API Call\n" + 
                        surname + ", " + firstName + " [" + season2 +"]\n" + HTTP_RESPONSE.body());
                else 
                    out.println("Failure! -- Java 11 REST API Call");
                
                out.println("---------------------------------");                
                
                if (statusCode2 == 200 || statusCode2 == 201)
                    if (HTTP_RESPONSE2.body() == null)
                    out.println("Success! -- Java 11 REST API Call\n" + 
                        surname + ", " + firstName + " [" + season2 +"]\n" + "Data was discarded.");
                else 
                    out.println("Failure! -- Java 11 REST API Call");
                
                out.println("---------------------------------");

                if (statusCode3 == 200 || statusCode3 == 201) {
                    out.println("Success! -- Java 11 REST API Call\n" + "Let's download the file! ");
                    var HTTP_STREAM = HTTP_RESPONSE3.body();
                    Files.copy(HTTP_STREAM, new File("response2.json").toPath(), StandardCopyOption.REPLACE_EXISTING);
                    HTTP_STREAM.close();
                }
                else 
                    out.println("Failure! -- Java 11 REST API Call");                                               
            };
            
            out.println("---------------------------------");
        } catch (Exception e) { out.println("Failure: A " + e.getClass() + " was thrown " + e.getMessage()); };
    };
};