By Jan Graba
Since the second one variation of this article, using the web and networks typically has persevered to extend at a ravishing fee. This has resulted in either a rise favourite 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 take care of with the recent advancements in community know-how, in order that the Java programming language is still one of many mainstays of community software program development.
In offering a truly readable textual content that avoids getting immersed in low-level technical information, whereas nonetheless offering an invaluable, useful consultant to community programming for either undergraduates and busy IT pros, this 3rd version maintains the craze of its predecessors. To hold its foreign money, the textual content has been up-to-date to mirror adjustments that experience taken position in Java's community expertise during the last seven years (including the discharge of Java 7), when keeping its amazing good points of various code examples, screenshots and end-of-chapter exercises.
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Additional resources for An Introduction to Network Programming with Java: Java 7 Compatible
It provides an implementation of the echo protocol (on port 7). 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.
More often than not, however, we do not need to know the latter. Method sleep is used to make a thread pause for a specified number of milliseconds. 5 seconds. This suspends execution of the thread and allows other threads to be executed. 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.
Instead, each datagram packet is sent as an isolated transmission whenever necessary. As noted in Chap. 1, datagram (UDP) sockets provide a (usually) faster means of transmitting data than TCP/IP sockets, but they are unreliable. 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.
An Introduction to Network Programming with Java: Java 7 Compatible by Jan Graba