import java.io.IOException;
import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.net.http.HttpRequest.Builder;
import java.net.http.HttpResponse.BodyHandlers;

public class Client {
  
  public static void get() 
  throws IOException, InterruptedException {
    String url = "https://jsonplaceholder.typicode.com/users";
    HttpClient client = HttpClient.newHttpClient();
    Builder request = HttpRequest.newBuilder();
    request.uri(URI.create(url));
    request.GET();

    HttpResponse<String> res = 
      client.send(request.build(), 
      BodyHandlers.ofString());

    System.out.println(res.body());
  }

  public static void post() 
  throws IOException, InterruptedException {
    String url = "https://jsonplaceholder.typicode.com/users";
    HttpClient client = HttpClient.newHttpClient();
    Builder request = HttpRequest.newBuilder();
    request.uri(URI.create(url));
    request.header("Content-Type", "application/json");
    String body = "{ \"name\": \"John\", \"age\": 30 }";
    request.POST(HttpRequest.BodyPublishers.ofString(body));

    HttpResponse<String> res = 
      client.send(request.build(), 
      BodyHandlers.ofString());

    System.out.println(res.body());
  }

  public static void put() 
  throws IOException, InterruptedException {
    String url = "https://jsonplaceholder.typicode.com/users/1";
    HttpClient client = HttpClient.newHttpClient();
    Builder request = HttpRequest.newBuilder();
    request.uri(URI.create(url));
    request.header("Content-Type", "application/json");
    String body = "{ \"name\": \"John\", \"age\": 30 }";
    request.PUT(HttpRequest.BodyPublishers.ofString(body));

    HttpResponse<String> res = 
      client.send(request.build(), 
      BodyHandlers.ofString());

    System.out.println(res.body());
  }

  public static void delete() 
  throws IOException, InterruptedException {
    String url = "https://jsonplaceholder.typicode.com/users/1";
    HttpClient client = HttpClient.newHttpClient();
    Builder request = HttpRequest.newBuilder();
    request.uri(URI.create(url));
    request.DELETE();

    HttpResponse<String> res = 
      client.send(request.build(), 
      BodyHandlers.ofString());

    System.out.println(res.body());
  }
}