rounding off

[Ankur kothari]

double d=3.95;
System.out.printf("%.1f",d);
output is 4........
so 3.95 gets rounded to 4.....3.91 to 3.92 is rounded to 3.9 and 3.95 to 3.99 is rounded to 4.0

  public class TestS
{
public static void main(String ar[])
{
double d1=123.5;
double d2=3.95;
System.out.printf("%.0f %.1f",d1,d2);
}
}  

output is 124 4.0

is there any other rule that i should know about or this is it......

[Aneesh Vijendran]

Not sure why you want to use the

%.0f %.1f

option.

If you just print:

System.out.printf(d1 + " " + d2);

Will show you the desired effect.

Else Use java.text.DecimalFormat

double d1=123.5;  
String _db = new DecimalFormat("##.##").format(d1);
System.out.println(_db);

Cheers
Aneesh