This is a summary of the full tutorial published on howtostartprogramming.in.
TL;DR This quick‑start guide shows you how to build a fully‑functional Java client for the OpenAI API in 2026. You’ll need: JDK 21 (or newer) Maven 3.9+ (or Gradle 8+) An OpenAI API key (from platform.openai.com ) Optional: dotenv for local environment variables Tool / Library Version Purpose OkHttp 4.12.0 HTTP client with HTTP/2 & streaming support Jackson Databind 2.16.0 JSON serialization/deserialization dotenv-java 2.2.0 Load .env files securely EnlighterJS 3.5.0 Syntax‑highlighted code blocks (used in this blog) Key code snippets /* 1⃣ Load API key / String apiKey = System.getenv("OPENAI_API_KEY"); if (apiKey == null) throw new IllegalStateException("Missing OPENAI_API_KEY"); / 2⃣ Build HTTP client */ OkHttpClient client = new OkHttpClient.Builder() .connectTimeout(Duration.ofSecond
📖 Read the Full Tutorial
🔗 Java OpenAI API integration tutorial with examples 2026 — Full Guide with Code Examples
The full article includes:
- ✅ Step-by-step code examples (copy-paste ready)
- ✅ Complete working project (Spring Boot / Java)
- ✅ Common mistakes + fixes
- ✅ Production tips and benchmarks
- ✅ FAQ section
Published on How to Start Programming — practical AI and Java tutorials for developers.
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