Hello. I do not have an answer for you. I tried myself, using unirest as instructed in the Mashape documentation (You might need a different value for “XMashape-Key”)

<pre><code>
HttpResponse<JsonNode> response = Unirest.get(“https://restcountries-v1.p.mashape.com/all”)
.header(“X-Mashape-Key”, “78mZ1stwA2msh8ifjBMAo1ltPsjyp1HQk8JjsnUG6XNABnfdO8”)
.header(“Accept”, “application/json”)
.asJson();
</code></pre>

This worked as expected. Check if you have any firewall blocking requests made from Java. I’m sorry if I can’t be that helpful

Fayder