Asynchronous HTTP Client for Java

You have several choices for Async HTTP Clients in Java

  1. Java 8: Use the async-http-client formerly called ning http client library.
  2. Java 11 and above: JDK now comes with the java.net.http. HttpClient which is fully asynchronous.
  3. Square’s OkHttpClient. Supports both sync blocking and async calls with callbacks. Quite popular on Android.

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