Download e-book for iPad: An Introduction to Network Programming with Java: Java 7 by Jan Graba

By Jan Graba

ISBN-10: 1447152549

ISBN-13: 9781447152545

Because the moment variation of this article, using the net and networks often has persevered to extend at a good looking cost. This has resulted in either a rise fashionable for community software program and to advancements within the expertise used to run such networks, with the latter obviously resulting in adjustments within the former. in this time, the Java libraries were up-to-date to maintain with the recent advancements in community expertise, in order that the Java programming language remains to be one of many mainstays of community software program development.

In offering a really readable textual content that avoids getting immersed in low-level technical info, whereas nonetheless supplying an invaluable, useful advisor to community programming for either undergraduates and busy IT execs, this 3rd version keeps the rage of its predecessors. To maintain its forex, the textual content has been up to date to mirror alterations that experience taken position in Java's community know-how during the last seven years (including the discharge of Java 7), while keeping its striking good points of various code examples, screenshots and end-of-chapter routines.

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Additional info for An Introduction to Network Programming with Java: Java 7 Compatible (3rd Edition)

Example text

1 below. Fig. 1 Example output from the ThreadShowName program 51 52 3 Multithreading and Multiplexing In the above program, each of the two threads was carrying out exactly the same task, which meant that each of them could be created from the same Thread class and make use of exactly the same run method. In practice, of course, different threads will normally carry out different tasks. If we want the threads to carry out actions different from each other’s, then we must create a separate class for each thread (each with its own run method), as shown in the next example.

For example: byte[] buffer = new byte[256]; 5. Create a DatagramPacket object for the incoming datagrams. length); 6. Accept an incoming datagram. 2 Using Sockets 25 7. Retrieve the data from the buffer. This is the same as step 6 in the server program. getLength()); Steps 2–7 may then be repeated as many times as required. 8. Close the DatagramSocket. This is the same as step 9 in the server program. close(); As was the case in the server code, there is no checked exception generated by the above close method in the finally clause of the client program, so there will be no try block.

7 Example output from the GetRemoteTime program To illustrate just how easy it is to provide a server that implements the Daytime protocol, example code for such a server is shown below. util to create a Date object that will automatically hold the current day, date and time on the server’s host machine. To output the date held in the Date object, we can simply use println on the object and its toString method will be executed implicitly (though we could specify toString explicitly, if we wished).

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An Introduction to Network Programming with Java: Java 7 Compatible (3rd Edition) by Jan Graba

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