Given:
double amount = 42_000.00;
NumberFormat format = NumberFormat.getCompactNumberInstance( Locale.FRANCE, NumberFormat.Style.SHORT );
System.out.println( format.format( amount ) );
What is the output?
* 42 000,00 €
* 42000E
* 42 k
* 42000
#java #certificationquestion #ocp
* 42k
Here's why:
The `NumberFormat.getCompactNumberInstance(Locale.FRANCE, NumberFormat.Style.SHORT)` method in Java is used to format numbers in a compact style for the specified locale.
For `Locale.FRANCE`, the compact number instance will format the number `42000.00` as "42k",
because the `SHORT` style typically represents the thousands with a 'k'.
The currency symbol is not included in the output when using the `getCompactNumberInstance` method,
and the decimal part is not shown for whole numbers when formatted in the `SHORT` style.
Numbers and Currencies: Using Predefined Formats
https://docs.oracle.com/javase/tutorial/i18n/format/numberFormat.html
Class NumberFormat
https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/text/NumberFormat.html
Enum Class NumberFormat.Style
https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/text/NumberFormat.Style.html