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Today, writing an application that does not communicate over the Internet in some fashion is rare. From sending data to another machine to scraping information off remote web pages, networking plays an integral part in today’s computing world. Java makes it easy to communicate over a network using the new I/O (NIO) and many I/O features for the Java platform (NIO.2) APIs. This chapter does not attempt to cover every networking feature that is part of the Java language, as the topic is quite large. However, it does provide a handful of recipes that are the most useful to a broad base of developers. You learn about a few of the standard networking concepts, such as sockets, and some newer concepts introduced with the latest release of the Java language. If you find this chapter interesting and want to learn more about Java networking, you can find lots of resources online.