Real-Time apps have been popularized by social-notification tools like Twitter and Friendfeed. With a Real-Time web app you can get website information as soon as it's published. Learn techniques that allow you to create responsive, continually updated web applications that conserve server resources while providing a slick user experience using jQuery, XMPP and PHP.

Once you identify idiomatic patterns in code, the next step is to harvest and use them. Understanding the relationship between design and code can facilitate the discovery of reusable code. In Part-1 learn the relationship between code and design. In Part-2 learn two techniques for harvesting idiomatic patterns: capturing patterns as APIs and using metaprogramming techniques.

This article, explores techniques for handling two of the most common data formats used on the Internet — XML and JavaScript Object Notation (JSON)— on the Android platform. Learn the basics of XML and JSON and how to build an Android application that parses and displays a Twitter status-update in both formats.

Java language is the tool of choice for Android developers. The Android runtime uses its own virtual machine, Dalvik, which is not the usual Java virtual machine that most Java developers are used to. In this article you will learn advanced Java features and how they are implemented on Android. This includes features such as concurrency, networking, and database access.

With configuration, installation, and the use of Hadoop in single-node and also the use in multi-node architectures under your belt, you can now turn to the task of developing applications within the Hadoop infrastructure. This article explores the Hadoop APIs and data flow and demonstrates their use with a simple mapper and reducer application.