session 5 - inter nationalization and network

8/3/2019 Session 5 - Inter Nationalization and Network

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Session 5

Internationalization

Networking


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Introduction to advance swing control

JColorChooser

JList

JComboBox

JTable

JTree

JTabbedPane JSplitPane


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Module 1 Introduction to Internationalization

Internationalization Process

Internationalization Elements

Module 2 Overivew of Networking

URL

URLConnection class

Socket class,ServerSocket class

Datagram


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Need of Internationalization Not all countries across the world speak or understand English

language

Symbols for currency vary across countries

Date and Time are represented differently in some countries

Spelling also varies amongst some countries

Alternatives to Solve the Problem

Develop the entire product in the desired language

Translate the entire product in the desired language


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The process of creating applications which can adapt andadjust to various countries, languages and regions is knownas internationalization. The word internationalization is

often abbreviated as I18N. The process of adapting an application for a specific

language or country by addition of locale-specificcomponents and translation of text is referred to aslocalization. The word localization is often abbreviated as

L10N.


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The same executable application can run worldwide

Textual elements such as labels and messages for GUI are

not hard-code.

Support for new language does not require recompilation

Culturally dependent data, such as date and currency appear

formats that conform.

Internationalized programs are localized quickly


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Unicode provides a unique number for every characterirrespective of platform, program or language. Unicode is a 16-

bit character encoding system that supports the worlds major

languages. The primitive data type char in Java is based on

Unicode encoding.


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1. Creating the Properties File

2. Defining the Locale

1. Locale(String language, String country)2. Locale(String language)

3. Using the ResourceBundle class

4. Fetching the Text from Resource Bundle


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Numbers: The NumberFormat class is used to create locale-specific

formats for

Numbers

Currencies

Percentages

Methods


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Date and Time: The date and time format should conform tothe conventions of the end users locale.

The method below is used to get the DateFormat:

getDateInstance(style, locale)


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Overivew of Networking

URL

URLConnection class

Socket class

ServerSocket class

Datagram


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TCP(Transmission Control Protocol) a connection-based

protocol that provides a reliable flow of data between two

computers

TCP is based on a four-layered model


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A computer generally has a single physical connectionavailable for the network. The physical connections are thetwo serial ports COM1 and COM2. One of these is usuallyused by a pointing device like the mouse. That leaves only asingle physical connection for the network.

There are some application uses same a port physical, Hencedata being send and received on the physical connection areon the concept of logic ports


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The physical connection is logically numbered within arange of 0 to 65535. The port numbers ranging from 0 to

1023 are reserved


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URL is an acronym for Uniform Resource Locator. It is areference or an address to a resource on the internet.


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Thejava.netpackage has a class URL which can be used toconstruct an URL object.

Constructors


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This class is used to create an IP address. An IP address iseither a 32 bit or 128 bit unsigned number used by IP which

is a low level protocol


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URLConnection is an abstract class that represents the

communication like beetween an application and a URL.

The URL class has a method openConnection to create an

URLConnection instance.

Some common methods


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A socket is one end-point of a two-way communication like between two programs

running on the networking

A server application runs on a machine and has a socket bound to a port. The server

wait, listening to a client socket to make a connection request.

On the client-side need to known the host name of the machine on the server is

running and the port to make a connection request. The client opens a socket with the

server on the servers machine and port


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The java.net.Socket class is used to represent the connectionbetween a client program and a server program.

Constructor

Socket(String hots, int port)


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The ServerSocket class is used to represent the server side of the two-way

communication.

Constructor

ServerSocket(int port) throws IOException

Creating ServerSocket Instance

Demo


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A datagram is an independent, self-contained message sentover the network whose arrival, arrival time, and order ofcontent are not guaranteed

Datagram packets are used to employ a connectionless

packet delivery service. Each message is routed based solelyon information contained within that packet.Multiplepackets sent from one machine to another might routeddifferently. Packets delivery by datagrams are notguaranteed.


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The java.net package provides the DatagramPacket class tocreate a datagram pakcet.

Constructors


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DatagramSocket class represents a socket for sending andreceiving datagram packet.

Constructor


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send(DataPacket p)

receive(DataPacket p)


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Introduction to I18N and L10N

Why need I18N and L10N?

How to implements?

Components of I18N and L10N Networking

Concept of Socket

Using of Socket Datagram and using Datagram

session 5 - inter nationalization and network

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