Really Simple Syndication (RSS) is a way for websites to create a computer-readable index of their information. Using a common XML format, websites can let people read their content via other websites and applications. RSS is most popular on blog and news websites.
Before diving into the code, it may make sense to quickly demonstrate the application in its final working form, so you can see the pieces and how they work together. The RSS reader application is an application meant to take RSS feeds (for example, from CNN, ESPN, and other websites), parse them into readable data, and provide a way for the user to view the articles. This application will allow you to add and delete feeds, providing both a name and a URL, and then provide a way to view the current entries from the feed.
The application begins with a basic set of instructions. These instructions are only visible when you run the application without any known feeds, as shown in the following screenshot...