Java. Decimal spaces %.3f

Question

Hi! I'm trying to display the average number with 3 decimal spaces using %.3f. Problem is, that numbers go through the "," instead of dot, which is not correct.

To make it short:

double n = 7;
double z = 8;
avg = (n+z)/2;
System.out.printf("The average of entered numbers is: %.3f", avg);

Output: The average of entered numbers is: 7,500
(Should be 7.500)

Any help is much appreciated!

Answer 1

I just managed to do it with a java.util.Locale, but why? I never had this issue before. Just updated to Eclipse Neon 3 and begun to have multiple issues and this is the one.
Is there any way to fix it, so I don't need to import Locale?
Thanks!

Answer 2

try using DecimalFormat class otherwise replace the comma with a dot via the string.replace() function.