Console Input and Output - Java - page 70

Some constants for other countries (and hence other currencies) are given in Display
2.4. However, unless your screen is capable of displaying the currency symbol for the
country whose constant you use, the output might not be as desired.
These location constants are objects of the class Locale . In order to make the class
Locale and these constants available to your code, you must include the following
near the start of the file with your program:

import java.util.Locale;

If you do not use any of these location constants and only use the default location, you
do not need this import statement.
The notation Locale.US may seem a bit strange, but it follows a convention that is
frequently used in Java code. The constant is named US, but we want specifically that
constant named US that is defined in the class Locale . So we use Locale.US . The nota-
tion Locale.US means the constant US as defined in the class Locale .

Importing Packages and Classes
Libraries in Java are called packages . A package is simply a collection of classes that
has been given a name and stored in such a way as to make it easily accessible to your
Java programs. Java has a large number of standard packages that automatically come
with Java. Two such packages are named java.text and java.util . In Display 2.3
we used the class NumberFormat , which is a member of the package java.text . In
order to use NumberFormat , you must import the class, which we did as follows:

package

import java.text.NumberFormat;

java.text

Display 2.4 Locale Constants for Currencies of Different Countries

Locale.CANADA Canada (for currency, the format is the same as US)

Locale.CHINA China

Locale.FRANCE France

Locale.GERMANY Germany

Locale.ITALY Italy

Locale.JAPAN Japan

Locale.KOREA Korea

Locale.TAIWAN Taiwan

Locale.UK United Kingdom (English pound)

Locale.US United States