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Introduction to Streams

A stream is simply an abstract representation of a physical input or output device. A stream can be thought of as a pipe that bytes of data flow through, and therefore data can be both read to and written from a stream.

As you have probably guessed, there are two forms of streams: input streams and output streams. Examples of input streams are a keyboard, disk file, or remote network app that is sending data. Examples of an output stream are a disk file, a console window, or even a printer.

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