HTTP Client

Code

import java.net.URI;
import java.net.http.*;
import java.time.Duration;

HttpClient client = HttpClient.newBuilder()
    .connectTimeout(Duration.ofSeconds(10))
    .build();

// GET request
HttpRequest getRequest = HttpRequest.newBuilder()
    .uri(URI.create("https://api.example.com/users"))
    .header("Accept", "application/json")
    .timeout(Duration.ofSeconds(30))
    .GET()
    .build();

HttpResponse<String> response = client.send(
    getRequest, HttpResponse.BodyHandlers.ofString());

System.out.println("Status: " + response.statusCode());
System.out.println("Body: " + response.body());

// POST request
HttpRequest postRequest = HttpRequest.newBuilder()
    .uri(URI.create("https://api.example.com/users"))
    .header("Content-Type", "application/json")
    .POST(HttpRequest.BodyPublishers.ofString(
        "{"name":"Alice"}"))
    .build();

Explanation

The modern HTTP client introduced in Java 11 supports HTTP/2 and async requests.

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