Thank you All for your help!!
but i have noticed that if you pass double value 45.999 it rounds off the
fractional part and returns 46.00
Is it a bug or NumberFormat class behaves like this only ?
below is the code to do it.
import java.text.*;
public class Truncate
{
public static String trim(double d)
{
DecimalFormat format = new DecimalFormat();
format.applyPattern("0.00");
// format.setMaximumFractionDigits(2);
return format.format(d);
}
public static void main(String[] args)
{
Truncate t = new Truncate();
System.out.println(t.trim(234.8987));
}
}
-----Original Message-----
From: Chris Pratt [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, August 29, 2001 2:46 AM
To: [EMAIL PROTECTED]
Subject: Re: offtopic : to truncate a double
Take a look at the java.text.DecimalFormat()
(*Chris*)
----- Original Message -----
From: "Richard Yee" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Tuesday, August 28, 2001 1:09 PM
Subject: Re: [JSP-INTEREST] offtopic : to truncate a double
> Raj,
> There is not a method that truncates a double to a certain
> precision. Check out this link for an explanation on Performing Exact
> Calculations With Floating-Point Numbers
>
> http://developer.java.sun.com/developer/JDCTechTips/2001/tt0807.html
>
> Basically, can either use the BigDecimal class that supports arbitrary
> precision numbersinstead of the double type or you can write a method that
> rounds a number to the desired precision for you.
>
> ie
> /**
> * Trim a double value to two decimal points
> *
> public static double trim(double d)
> {
> BigDecimal bd = new BigDecimal(d);
> return bd.setScale(2,BigDecimal.ROUND_HALF_UP).doubleValue();
> }
>
>
> At 09:53 PM 8/27/01 -0700, you wrote:
> >Hi all,
> >
> >i have variable double x = 34.8976 ;
> >i want only 2 digits after decimal. Is there any method returning double
> >and gives value x = 34.89 ???
> >
> >Cheers!!
> >Raj
> >
>
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