Java Cookbook, 2nd Edition by Ian F Darwin

Author:Ian F Darwin [Ian F Darwin]
Language: eng
Format: epub
Tags: COMPUTERS / General
ISBN: 9780596159412
Publisher: O'Reilly Media
Published: 2008-12-16T16:00:00+00:00

In the first recipe, we'll see how to do the connect in essentially one line of Java (plus a bit of error handling). We'll then cover error handling and transferring data over a socket. Next, we'll take a quick look at a datagram or UDP client that implements most of the TFTP (trivial file transfer protocol) that has been used for two decades to boot diskless workstations. We'll end with a program that connects interactively to a text-based server such as Telnet or email.

A common theme through most of these client examples is to use existing servers so that we don't have to generate both the client and the server at the same time. With one exception, all of these are services that exist on any standard Unix platform. If you can't find a Unix server near you to try them on, let me suggest that you take an old PC, maybe one that's underpowered for running the latest Microsoft software, and put up a free, open source Unix system on it. My personal favorite is OpenBSD, and the market's overall favorite is Linux. Both are readily available on CD-ROM, can be installed for free over the Internet, and offer all the standard services used in the client examples, including the time servers and TFTP. Both have free Java implementations available.

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