retain two decimal digits.

 1 package kju.o;

 2 import static kju.print.Printer.*;

 3 import java.text.*;

 4 class MathDemo 

 5 {

 6     public static void main(String[] args) 

 7     {

 8         double d = 1.2458;

 9         println(round(d));    //prints:1.25

10     }

11 

12     static String round(double d) 

13     {

14         DecimalFormat nf = new DecimalFormat("#.00");

15         return nf.format(d);    //retain two decimal digits.

16     }

17 }