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 }

 

posted @ 2014-04-01 21:55  wonkju  阅读(284)  评论(0)  编辑  收藏  举报