Default Locale = fr_FR value = 12 345,6789
import java.util.Locale;
public class LocaleDemoTwo
{
public static void main ( String[] args )
{
double value = 12345.6789 ;
System.out.printf( Locale.ITALY, "value = %,10.4f%n", value );
}
}
You can specify the Locale to use.
The above program asks to format the value using Locale.ITALY
It outputs:
value = 12.345,6789
Different countries use different formats for numbers. Usually you don't need to worry about this. Your environment will usually be set up to use the right locale for your location
Another form of printf() looks like this:
printf(locale, formatString, value1, value2, value3, ...)
Here are some locales you might want to play with.
Do you suspect that the following works?
Integer myInt = 12345 ;
System.out.printf("myInt = %,6d%n", myInt );
Float myFloat = 12345.54f ;
System.out.printf("myFloat = %,10.2f%n", myFloat );
Reminder: The 12345.54f is a single precision float literal.
Without the "f" it would be double.