OCP Date, Time, and Localization 3

Question 1

Which Java class represents a specific geographic, political, or cultural region used for localization?

Accepted Answer

Locale

Answer

Locale represents a specific combination of language, country, and variant used to tailor data formatting and resource lookup for a region.

Question 2

What is the correct way to obtain a currency-formatted NumberFormat for the US locale?

Accepted Answer

NumberFormat.getCurrencyInstance(Locale.US)

Answer

NumberFormat.getCurrencyInstance(Locale.US) is the standard factory method that returns a formatter configured for currency in the given locale.

Question 3

What naming convention does Java use for ResourceBundle properties files?

Accepted Answer

BaseName_language_country.properties

Answer

Java expects properties files named as BaseName_language_country.properties (underscore-separated) for locale-specific bundles, e.g., Messages_fr_FR.properties.

Question 4

In what order does Java search for a ResourceBundle named "Messages" when the locale is Locale("fr", "FR")?

Accepted Answer

Messages_fr_FR.properties → Messages_fr.properties → Messages.properties

Answer

Java searches from most-specific to least-specific: full locale (fr_FR), language only (fr), then the default bundle — stopping at the first match found.

Question 5

Which method sets the default Locale for only the FORMAT category without changing the DISPLAY category?

Accepted Answer

Locale.setDefault(Locale.Category.FORMAT, newLocale)

Answer

Locale.setDefault(Locale.Category, Locale) accepts a category (FORMAT or DISPLAY) as the first argument, allowing independent defaults for formatting and display purposes.

(OCP) Oracle Certified Professional Practice Test

(OCP) Oracle Certified Professional Practice Test

OCP Date, Time, and Localization 3