REST API Integration in Java

REST API Integration in Java — a practical guide to Java REST API with clear examples you can reuse in real projects.

Java Tutorial Series (78/90). Prefer one article? Read the complete Java tutorial.

Short description

Combine HttpClient with a JSON library (Jackson/Gson) for practical integrations.

POST JSON sketch

HttpRequest req = HttpRequest.newBuilder(URI.create("https://api.example.com/items"))
    .header("Content-Type", "application/json")
    .POST(HttpRequest.BodyPublishers.ofString("{"title":"Hello"}"))
    .build();