Download PDF by Jan Graba: An Introduction to Network Programming with Java: Java 7
By Jan Graba
Because the moment version of this article, using the net and networks more often than not has endured to extend at a wonderful price. This has resulted in either a rise well-known for community software program and to advancements within the know-how used to run such networks, with the latter evidently resulting in alterations 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 is still one of many mainstays of community software program development.
In offering a really readable textual content that avoids getting immersed in low-level technical information, whereas nonetheless offering an invaluable, functional advisor to community programming for either undergraduates and busy IT execs, this 3rd variation keeps the fashion of its predecessors. To maintain its forex, the textual content has been up-to-date to mirror adjustments that experience taken position in Java's community expertise over the last seven years (including the discharge of Java 7), while holding its extraordinary beneficial properties of various code examples, screenshots and end-of-chapter workouts.
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Additional info for An Introduction to Network Programming with Java: Java 7 Compatible (3rd Edition)
When the sleeping time expires, the sleeping thread returns to a ready state, waiting for the processor. Method interrupt may be used to interrupt an individual thread. In particular, this method may be used by other threads to ‘awaken’ a sleeping thread before that thread’s sleeping time has expired. Since method sleep will throw a checked exception (an InterruptedException) if another thread invokes the interrupt method, it must be called from within a try block that catches this exception. In the next example, static method random from core class Math is used to generate a random sleeping time for each of two threads that simply display their own names ten times.
As for TCP/IP, if there is a working Internet connection on the machine, then UDP is running. Once again, in order to start the application, first open two command windows and then start the server running in one window and the client in the other. ) As before, the example screenshots in Figs. 6 show the dialogues between the server and two clients. Observe the differences in output between this example and the corresponding TCP/IP example. ) Fig. 6 Example output from the UDPEchoClient program (with two clients connecting separately) 28 2 Starting Network Programming in Java Fig.
Since the connection is not maintained between transmissions, the server does not create an individual Socket object for each client, as it did in our TCP/ IP example. A further difference from TCP/IP sockets is that, instead of a ServerSocket object, the server creates a DatagramSocket object, as does each client when it wants to send datagram(s) to the server. The final and most significant difference is that DatagramPacket objects are created and sent at both ends, rather than simple strings.
An Introduction to Network Programming with Java: Java 7 Compatible (3rd Edition) by Jan Graba