Solved

Floats

Posted on 1998-08-27
5
306 Views
Last Modified: 2012-05-04
Hi,

I'm using Visual J++,
and I can't seem to get floats working right!
Here's a piece of code:
float f = 150 / 255;
g.drawString(new Float(f).toString,10,10);

It says 0.0
I'm no mathematician but I'm pretty sure that 150/255 isn't 0.

What's wrong?

Thanks
0
Comment
Question by:BabyFace
  • 4
5 Comments
 
LVL 3

Accepted Solution

by:
sailwind earned 30 total points
ID: 1222768
150 and 255 are both integers.
When you divide two integers, you'll get an integer.
0.588 casted into an integer is a 0. That's why you're
getting 0 for output.

You should do:

float f = 150.0/255.0;   // now you're dividing float by float

That'll correct the problem.

0
 
LVL 3

Expert Comment

by:sailwind
ID: 1222769
Oh yeah, since 150.0 is considered a double in Java. You should do:

double d = 150.0/255.0  


0
 
LVL 1

Author Comment

by:BabyFace
ID: 1222770
Thanks for your answer.
Which of the two take up more mem?
I suppose it's double eh?

Thanks again.
0
 
LVL 3

Expert Comment

by:sailwind
ID: 1222771
int 32 bits
double 64 bits
0
 
LVL 3

Expert Comment

by:sailwind
ID: 1222772
float 32 bits
long 64 bits
0

Featured Post

Free Tool: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
Android studio getdrawable(int) is deprecated 4 114
web services creation SOAP vs REST 5 56
jsp login check 12 42
Adding multiple JVM environments to RedHat 6 7 45
INTRODUCTION Working with files is a moderately common task in Java.  For most projects hard coding the file names, using parameters in configuration files, or using command-line arguments is sufficient.   However, when your application has vi…
Go is an acronym of golang, is a programming language developed Google in 2007. Go is a new language that is mostly in the C family, with significant input from Pascal/Modula/Oberon family. Hence Go arisen as low-level language with fast compilation…
Viewers learn about the “for” loop and how it works in Java. By comparing it to the while loop learned before, viewers can make the transition easily. You will learn about the formatting of the for loop as we write a program that prints even numbers…
This theoretical tutorial explains exceptions, reasons for exceptions, different categories of exception and exception hierarchy.

791 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