Locale

Question 1

How do we create new locale?

Answer 1

Using Locale util.
Locale.getDefault()
Locale locale = new Locale(“hr”), new Locale(“hr”,”HR”)
Locale.GERMAN
Locale.GERMANY
Local.Builder()

Question 2

How do we set default categories for localization?

Answer 2

Display -> Locale.setDefault(Category.DISPLAY, german)
Format -> Locale.setDefault(Category.FORMAT, german)

Question 3

How do we format number using locale?

Answer 3

Using NumberFormat class.

NumberFormat.getIntegerInstance(Locale.US);
NumberFormat.getCurrencyInstance(Locale.US);
NumberFormat.getNumberInstance(Locale.US);
NumberFormat.getPercentInstance(Locale.US);
NumberFormat.getCompactNumberInstance(Locale.US, NumberFormat.Style.SHORT);
NumberFormat.getInstance();

Formatter is then used to .format() some number.

Question 4

What does CompactNumberFormat do?

Answer 4

It formats number with locale in context in several different ways: 1,000,000.00 into 1 million.
Formats are defined by NumberFormat.Style, for eg. NumberFormat.Style.SHORT

Question 5

How do we parse numbers in locale formatting?

Answer 5

Each NumberFormat instance has .parse() method.

Question 6

How do we parse dates in locale?

Answer 6

DateTimeFormatter.ofLocalizedDate(FormatStyle)
DateTimeFormatter.ofLocalizedTime()
DateTimeFormatter.ofLocalizedDateTime()

Formatter is then used to .format() some date.

Also, DateTimeFormatter.withLocale(locale).format(date) can be used.

Question 7

ResourceBundle, how do we use it?

Answer 7

ResourceBundle.getBundle(“Name”, locale);
or
ResourceBundle.getBundle(“Name”);

Then we rs.getString(“key”)

Question 8

How ResoruceBundle resolves properties files?

Answer 8

If locale is defined as “hr_HR”:

Wanted:
Name_hr_HR.properties
Name_hr.properties

Default:
Name_us_US.properties
Name_us.properties

Name.properties

MissingResourceException

If wanted locale is defined as “hr”:
Name_hr.properties
Name_us.properties
Name.properties

Question 9

How do we format messages from string?

Answer 9

key.in.properties=Hello, {0} and {1}
MessageFormat.format(string, “Tammy”, “Henry”)

Question 10

How do we set properties?

Answer 10

We instantiate new Properties();
pros.setProperty(“name”, “Peter”)
…