By Jan Graba
Since the second one variation of this article, using the web and networks usually has persevered to extend at a good looking price. This has resulted in either a rise famous for community software program and to advancements within the expertise used to run such networks, with the latter clearly resulting in adjustments within the former. in this time, the Java libraries were up to date to take care of 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 info, whereas nonetheless offering an invaluable, useful consultant to community programming for either undergraduates and busy IT execs, this 3rd version maintains the fashion of its predecessors. To hold its forex, the textual content has been up-to-date to mirror alterations that experience taken position in Java's community know-how over the last seven years (including the discharge of Java 7), while conserving its extraordinary beneficial properties of diverse code examples, screenshots and end-of-chapter exercises.
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Because the moment variation of this article, using the net and networks as a rule has persevered to extend at a lovely fee. This has ended in either a rise popular for community software program and to advancements within the expertise used to run such networks, with the latter clearly resulting in adjustments within the former.
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Additional resources for An Introduction to Network Programming with Java: Java 7 Compatible
GetInputStream()); //Step 2. getOutputStream(),true); //Step 2. println(message); //Step 3. nextLine(); //Step 3. close(); //Step 4. exit(1); } } } } For the preceding client–server application to work, TCP/IP must be installed and working. How are you to know whether this is the case for your machine? Well, if there is a working Internet connection on your machine, then TCP/IP is running. 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.
This implementation sends one-line messages to a server and uses the following components: • a text field for input of messages (in addition to the text field for input of host name); • a text area for the (cumulative) echoed responses from the server; • a button to close the connection to the host. java, a printed copy of which appears at the end of this chapter. Examine this code and make the necessary additions in the places indicated by the commented lines. When you have completed the program, run it and supply the name of any convenient server when prompted for a server name.
The popularity of client/server applications over the past decade has exacerbated this demand enormously, with server programs sometimes having to process the needs of several hundreds of clients at the same time. Some years ago, each client that connected to a server would have caused a new process to be spawned on the server. The problem with this approach is that a fresh block of memory is set aside for each such process. While the number of clients connecting to the server remained reasonably low, this presented no difficulties.
An Introduction to Network Programming with Java: Java 7 Compatible by Jan Graba