Application: RSS Aggregator

RSS is an acronym for Rich Site Summary (or, some will tell you, Really Simple Syndication). It is an XML-based technology for syndicating the content of news and blog Web sites. A program that is aware of RSS is called an aggregator. If you see a little orange XML icon in a Web page, it means that that content is available in an RSS feed.

In this episode, we'll write an RSS aggregator. It will pull together many of the technologies we have discussed, including GUI apps, and introduce some advanced topics we haven't discussed, such as networking, Collections, and caching.

Before we talk about what we'll write, let's figure out a bit more about RSS.

RSS is an XML format that is largely concerned with defining titles, ...

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