Does this tool support async HTTP requests?

Yes. You can toggle between synchronous client.send() and asynchronous non-blocking client.sendAsync() returning CompletableFuture >.

Updated: August 2026 • Verified v1.2

cURL to Java HttpClient Code Converter

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HttpClient.newHttpClient().send(HttpRequest.newBuilder().uri(URI.create(url)).build(), HttpResponse.BodyHandlers.ofString())

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Understanding Your Results

Outputs clean, production-grade Java code using java.net.http.HttpClient, HttpRequest.newBuilder(), custom headers, authorization, timeouts, and modern Java record response DTOs.

Practical Guidance & Next Steps

Modern Java 11+ java.net.http.HttpClient replaces legacy HttpURLConnection and Apache HttpClient without requiring external third-party dependencies.

What is this?

A developer utility that transforms raw cURL command lines into idiomatic Java 11/17/21 java.net.http.HttpClient code.

How does it work?

1. Paste any standard cURL command with HTTP headers and body payload. 2. Choose between Synchronous (send) or Asynchronous (sendAsync CompletableFuture) modes. 3. Copy the compiled Java class and record DTO directly into your IDE.

Why use it?

Eliminates tedious manual syntax mapping from curl flags (-H, -d, -X, -u) into Java HttpRequest builders.

Technical Scope & Calculation Limitations

Multipart file uploads and binary streams should be adapted with HttpRequest.BodyPublishers.ofFile() in production.

Frequently Asked Questions

java.net.http.HttpClient was introduced in Java 11 as a standard module and is fully supported in Java 17, 21, and subsequent LTS releases without external dependencies.

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