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By Michael J. Donahoo, Kenneth L. Calvert
The networking functions of the Java platform were prolonged significantly because the first variation of the booklet. This new version covers model 1.5-1.7, the most up-tp-date iterations, in addition to making the next improvements:
The API (application programming interface) reference sections in each one bankruptcy, which describe the proper components of every classification, were changed with (i) a precis part that lists the sessions and strategies utilized in the code, and (ii) a ?gotchas? part that mentions nonobvious or poorly-documented features of the items.
In addition, the ebook covers numerous new periods and features brought within the previous few revisions of the Java platform. New abstractions to be lined contain NetworkInterface, InterfaceAddress, Inet4/6Address, SocketAddress/InetSocketAddress, Executor, and others; prolonged entry to low-level community info; help for IPv6; extra entire entry to socket thoughts; and scalable I/O. the instance code can also be changed to exploit new language positive aspects similar to annotations, enumerations, in addition to generics and implicit iterators the place appropriate.
Most web functions use sockets to enforce community conversation protocols. This book's centred, tutorial-based method is helping the reader grasp the initiatives and strategies necessary to almost all client-server initiatives utilizing sockets in Java. bankruptcy 1 presents a genral evaluate of networking ideas to permit readers to synchronize the recommendations with terminology. bankruptcy 2 introduces the mechanics of easy consumers and servers. bankruptcy three covers uncomplicated message building and parsing. bankruptcy four then bargains with innovations used to construct extra powerful consumers and servers. bankruptcy five (NEW) introduces the scalable interface amenities which have been brought in Java 1.5, together with the buffer and channel abstractions. bankruptcy 6 discusses the connection among the programming constructs and the underlying protocol implementations in additional element. Programming options are brought via easy software examples followed by way of line-by-line code statement that describes the aim of each a part of this system. The book's website comprises many examples of command-based sockets-related code mentioned through the publication. No different source provides so concisely or so successfully the cloth essential to wake up and working with Java sockets programming.
KEY FEATURES
* targeted, tutorial-based guideline in key sockets programming innovations permits reader to fast arise to hurry on Java purposes.
* Concise and up to date insurance of the newest platform (1.7) for Java
applications in networking technology
* offers code for all instance courses through a significant other site to allow the reader see the $64000 items and techniques in context and to appreciate the aim of every line of code.
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starting Android four is an replace to starting Android three, initially written via Mark Murphy. it's your first step at the route to growing marketable apps for the burgeoning Android marketplace, Amazon's Android Appstore, and extra. Google’s Android operating-system has taken the via typhoon, going from its humble beginnings as a phone working method to its present prestige as a platform for apps that run throughout a gamut of units from telephones to pills to netbooks to televisions, and the record is certain to develop.
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Extra resources for TCP/IP Sockets in Java: Practical Guide for Programmers (2nd Edition) (The Practical Guides)
Example text
Received: Echo this! " Received: Echo this! java on the book’s Web site for an implementation of the TCP echo client with a graphical interface. Socket: Creation Socket(InetAddress remoteAddr, int remotePort) Socket(String remoteHost, int remotePort) Socket(InetAddress remoteAddr, int remotePort, InetAddress localAddr, int localPort) Socket(String remoteHost, int remotePort, InetAddress localAddr, int localPort) Socket() The first four constructors create a TCP socket and connect it to the specified remote address and port before returning.
Loop forever, iteratively handling incoming connections: lines 20–34 Accept an incoming connection: line 21 The sole purpose of a ServerSocket instance is to supply a new, connected Socket instance for each new incoming TCP connection. When the server is ready to handle a client, it calls accept(), which blocks until an incoming connection is made to the ServerSocket’s port. (If a connection arrives between the time the server socket is constructed and the call to accept(), the new connection is queued, and in that case accept() returns immediately.
Java, the getBytes() method of String, which converts the characters in a String instance to bytes in a standard way. Before considering the details of that kind of conversion, we first consider the representation of the most basic data types. , integer values in the range 0–255. Using that ability, we can encode the values of other (larger) primitive integer types. However, the sender and receiver have to agree on several things first. One is the size (in bytes) of each integer to be transmitted.