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Bài giảng Công nghệ Java: Chương 14 - PhD. Trần Quang Diệu

Bài giảng "Công nghệ Java - Chương 14: Java socket programming" cung cấp cho người học các kiến thức: Java sockets programming, InetAddress class, socket class, sockets, socket constructors,. nội dung chi tiết: | CÔNG NGHỆ JAVA CH14. JAVA SOCKET PROGRAMMING Quang Dieu Tran PhD. http://sites.google.com/site/tranlectures 4/7/2018 http://sites.google.com/site/tranlectures 1 Java Sockets Programming • The package java.net provides support for sockets programming (and more). • Typically you import everything defined in this package with: import java.net.*; 4/7/2018 http://sites.google.com/site/tranlectures 2 Classes InetAddress Socket ServerSocket DatagramSocket DatagramPacket 4/7/2018 http://sites.google.com/site/tranlectures 3 InetAddress class • static methods you can use to create new InetAddress objects. – getByName(String host) – getAllByName(String host) – getLocalHost() InetAddress x = InetAddress.getByName( “cse.unr.edu”); Throws UnknownHostException 4/7/2018 http://sites.google.com/site/tranlectures 4 Sample Code: Lookup.java • Uses InetAddress class to lookup hostnames found on command line. > java Lookup cse.unr.edu .