How to round a number to two decimal places (Java)?

Question

Java

Hello!
How to round a number to two decimal places using a specific example:

Thank you!

Answer 1

private double round(double number, int scale) {
int pow = 10;
for (int i = 1; i < scale; i++)
pow *= 10;
double tmp = number * pow;
return (double) (int) ((tmp - (int) tmp) >= 0.5 ? tmp + 1 : tmp) / pow;
}

Answer 2

For a specific example, the top solutions may be suitable, but in the general case, I'm not very sure.
It's guaranteed to be like this:

jLabel5.setText(jLabel5.getText() + String.format( Locale.US, "%.2f", y) );

Here the separator is clear - a point, and the form of presentation will not suddenly turn out to be scientific.