The reason is that floating point numbers only approximate real numbers.
But this should work if all you want is two decimal places:
(*Chris*)
public class Junk {
public static void main (String[] args) {
float d1 = 99.44f;
float d2 = 99.40f;
float d3 = (float)(Math.rint((d1 - d2) * 100.00) / 100.00);
System.out.println(d3);
} //main
}
----- Original Message -----
From: "lancelot" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Friday, June 29, 2001 1:41 AM
Subject: [JSP-INTEREST] Need your help one float and double calc.
> Dear all,
> Who can tell me why the result is 0.040000916? and why it's not =
> 0.04, if I want to get 0.04 how could I do? thanks
>
> Lancelot
>
> D:\test>type testD.java
> public class testD
> {
> public static void main(String args[])
> {
> float d1=3D99.44f;
> float d2=3D99.40f ;
> float d3 =3D d1-d2 ;
> System.out.println(d3);
> }
> }
>
>
> D:\test>java testD
> 0.040000916
>
>
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