An demonstration of Volley - HTTP library announced by google in I/O 2013. Android has provided two HTTP Clients AndroidHttpClient (Extended from apache HTTPClient) and HttpUrlConnection to make a HTTP Request. Both has its own pros and cons. When an application is developed, we write HTTP connection classes which handles all the HTTP requests, creating THREADS to run in background, managing THREAD pool, response parsing, response caching, handling error codes, SSL connections, running requests in parallel and others stuffs around that. Every developer has his own way of implementing these functionalities.Some might use AsycnTask for running network operations in background, or some might use passing handlers created from UI thread to HTTP connection classes which then executes network operation in worker thread and uses the handler to pass back the parsed HTTP response back to the main thread.