What locale is used (useful for e.g. printf in Java)?

Modified on Sun, 21 Feb, 2021 at 8:11 PM

The following lines:

System.out.println(Locale.getDefault());
System.out.println(String.format("%f", 1000 * Math.PI));
System.out.printf("%f\n", 1000 * Math.PI);

print:

en_US
3141.592654
3141.592654