retain two decimal digits.
2224 ワード
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 }