It is JAVA I am looking for as the app requires J2ME to run - the app has been created on iOS, Android and Blackberry without the need for JAVA. They do not seem to have developed it properly for Windows 8 Mobile though - they have the app but when you run it on a Windows phone it says it requires JAVA to run. Jul 19, 2014 · Java can run applications developed using the java programming language and set of development tools. The JVM is a crucial component of the Java platform. The availability of JVMs on many types of hardware and software platforms enables Java to function both as middleware and a platform in its own right. Calling Web API from a Windows Phone 8 Application (C#) 10/09/2013; 16 minutes to read +4; In this article. by Robert McMurray. In this tutorial, you will learn how to create a complete end-to-end scenario consisting of an ASP.NET Web API application that provides a catalog of books to a Windows Phone 8 application.