Asynchronous HTTP Client for Java

Solution 1:

Use the "Async Http Client" formerly called ning http client library. See https://github.com/AsyncHttpClient/async-http-client

Solution 2:

Version 4.0 of Apache Commons HttpClient (now in HttpComponents/HttpCore) also support Java's NIO (non-blocking IO). I think this is your best bet.

Solution 3:

The Jetty HTTP client is asynchronous.