Internationalization

What is internationalization? the process of creating applications which can adapt and adjust to various countries, languages, regions.

I18N

What is localization? the process of adapting an application for a specific language or country by addition of locale-specific components and translation of text.

L10N

Why need internationalization?

Why need internationalization? Difference: - Language

- Currency

- Date and time

Alternatives to solve the Problem? Develop product

Translate product

Benefits of I18N and L10N No hard coding

No recompilation

Localized quickly

Unicode provide a unique number for every character irrespective of platform, program or language.

Unicode is a 16-bit character encoding

Significance of Unicode Java platform uses Unicode as its native character encoding.

\Uxxxx : X : hexadecimal digit

Internationalization Process

Properties file MessageBundle.properties

MessageBundle_fr_FR.properties

MessageBundle_de_DE.properties

Locale Constructors:

public Locale(String language, String country)

public Locale(String language)

Locale usLocale = new Locale(“en”,”us”)

Methods public static Locale getDefault()

public final String getDisplayCountry()

public final String getDisplayLanguage()

Resource Bundle Localized or translated into different languages

Handled for multiple locales at the same time

Supported for more locales later

Using Resource Bundle ResourceBundle getBundle(String, Locale)

Fetching the text from Resource Bundle public final String getString(String key)

Fetching the text from Resource Bundle public abstract Enumeration <String> getKeys()

Internationalization Elements

Component Captions

Caption text

Dates

Numerals

Percentage

Need for Formatting?

12345678

US 12,345,678

EU 12.345.678

NumberFormat class

getNumberInstance()

getCurrencyInstance()

getPercentInstance()

format()

DateFormat class

DateFormat getDateInstance (style, locale)

Formatting Message

It is not always possible to create a grammatically correct sentences with concatenation of phrases and variables.

So we need MessageFormat.

Steps for MessageFormat. Identify variables

Create template

Create object array

Create instance

Apply and Format