How to use the Yes No API in Java

Generate yes or no randomly. This guide calls it from Java with code we've run against the live endpoint.

Online · 923 msEndpoint tested Oct 24, 2026

1. What you need

Java 11 or newer (java.net.http is built in). Works as a single-file `java Main.java` run.

No API key or sign-up. Endpoint: https://yesno.wtf/api

2. Make the request

Java

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

var client = HttpClient.newHttpClient();
var req = HttpRequest.newBuilder(URI.create("https://yesno.wtf/api")).build();
var res = client.send(req, HttpResponse.BodyHandlers.ofString());
System.out.println(res.body());

3. The response

Trimmed from the live response on Oct 24, 2026.

JSON

{
  "answer": "yes",
  "forced": false,
  "image": "https://yesno.wtf/assets/yes/13-c3082a998e7758be8e582276f35d1336.gif"
}

4. Before you ship

Set a timeout and handle non-200 responses: free APIs can rate-limit or go down.
Cache responses where you can, instead of calling the API on every page view.
Read the official documentation ↗ for rate limits and terms of use.

FAQ

Does the Yes No API need an API key in Java?

No. The Yes No API works without an API key, so the Java example runs as-is.

Can I call the Yes No API from the browser?

Yes. It sends CORS headers, so front-end JavaScript can call it directly.

What does the Yes No API return?

JSON. The example response on this page is trimmed from a real response our health check received on Oct 24, 2026.

Same API in: Python · JavaScript · Node.js · PHP · Go · Ruby · C#
Yes No API: ratings & reviews · Yes No API alternatives · more free APIs for Java