Solved

Error in subtracting 2 float values

Posted on 2004-10-11
7
314 Views
Last Modified: 2010-03-31
Hello Everyone,

Following is the sample code that I want to run:

import java.lang.*;
public class Test{
  public static void main(String args[]) {
      String s1 = "5.5";
      String s2 = "8.5";
   
      Double i1 = Double.valueOf(s1);
      Double i2 = Double.valueOf(s2);

      double diff = i2-i1;
      if (diff>4)
            System.out.println("Test Successful...");
  }
}


Error that I am getting is:
"operator - cannot be applied to java.lang.Double".

I have to accept the string and then convert to double to perform the error checking comparison, thus, I cannot use compareTo() function. I have to perform the subtraction of the string that is converted to float. Can someone help me with it!!!

Thanks for any help.
0
Comment
Question by:seemasharma22
7 Comments
 

Accepted Solution

by:
sreejupamin earned 45 total points
ID: 12283991
You can say:
................................................
................................................
double diff=i2.doubleValue()-i1.doubleValue();
if(diff >4 )
....................


Hope this helped.

Regards,
nair
0
 
LVL 2

Expert Comment

by:gen718
ID: 12284002
try
   double diff = i2.doubleValue()-i1.doubleValue();
0
 
LVL 8

Expert Comment

by:thomas908
ID: 12284007
You need to convert the values to double NOT Double.
i1 and i2 in ur code are objects, there is no way one object can be subtrated from another. First they have to be converted to primitives and then can be subtracted
0
Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

 
LVL 8

Expert Comment

by:thomas908
ID: 12284012
>>i1 and i2 in ur code are objects
I meant references to objects
0
 

Expert Comment

by:sreejupamin
ID: 12284154
Thank u, Seema.
0
 

Author Comment

by:seemasharma22
ID: 12284250
Thanks a Bunch Mr. Nair !!! :) your solution solved one of my biggest worry.
0
 

Expert Comment

by:sreejupamin
ID: 12284549
You are most welcome :))))))))))))))
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

For customizing the look of your lightweight component and making it look opaque like it was made of plastic.  This tip assumes your component to be of rectangular shape and completely opaque.   (CODE)
Introduction This article is the last of three articles that explain why and how the Experts Exchange QA Team does test automation for our web site. This article covers our test design approach and then goes through a simple test case example, how …
Viewers learn how to read error messages and identify possible mistakes that could cause hours of frustration. Coding is as much about debugging your code as it is about writing it. Define Error Message: Line Numbers: Type of Error: Break Down…
This tutorial covers a step-by-step guide to install VisualVM launcher in eclipse.

920 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

17 Experts available now in Live!

Get 1:1 Help Now