Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

Floating number format in Java (01.10 instead of 1.1)?

Posted on 2004-09-19
9
Medium Priority
?
2,221 Views
Last Modified: 2012-08-13
Hi, I'm writing some program results in a text file in Java, using BufferedWriter and the function "write" (salida.write("Text"+f)), f is a float, which value is (for ex. 3.8) but I want to write in the file 03.80, and in other function I have 340.00, and I want to print it exactly like that (not 340). Any ideas?
0
Comment
Question by:cuesta
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 6
  • 2
9 Comments
 
LVL 20

Expert Comment

by:Venabili
ID: 12095187
use DecimalFormat:

NumberFormat formatter = new DecimalFormat("######.00");
String s = formatter.format(3.8);// 3.80
String s = formatter.format(340);// 340.00
0
 
LVL 20

Expert Comment

by:Venabili
ID: 12095190
If you need 1.1 to be shown as 01.10
NumberFormat formatter = new DecimalFormat("####00.00");
String s = formatter.format(1.1);// 01.10
0
 
LVL 20

Expert Comment

by:Venabili
ID: 12095195
In short :
In the format use 0 if you want the position always to be shown, #  if you want toi be shown only if exists ;)
0
VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

 
LVL 20

Expert Comment

by:Venabili
ID: 12095413
and how is this different from the already posted? Or better to ask, what exactly it adds as an information for this question? ;)
0
 

Author Comment

by:cuesta
ID: 12095467
Yeah! That works, thanx a lot, but, using:

NumberFormat formatter = new DecimalFormat("####00.00");
String s = formatter.format(1.1);

it prints "01,10" and I need "01.10", any way to change this?
0
 
LVL 20

Accepted Solution

by:
Venabili earned 2000 total points
ID: 12095535
It comes from the locales - in your locale the decimal point is a comma.
Try with a local with decimail point a point. Canada is such for example:
Locale locale = Locale.CANADA;
String string = NumberFormat.getNumberInstance(locale).format(1.1);  // 01.10
0
 
LVL 20

Expert Comment

by:Venabili
ID: 12095558
But this way you loose the formatter.
You should set the locale before making the formatter...
0
 
LVL 30

Expert Comment

by:Mayank S
ID: 12099312
>> and how is this different from the already posted?

Nothing, just a complete listing ;-) even contains for stuff like negative numbers, so on and so forth.
0

Featured Post

Concerto Cloud for Software Providers & ISVs

Can Concerto Cloud Services help you focus on evolving your application offerings, while delivering the best cloud experience to your customers? From DevOps to revenue models and customer support, the answer is yes!

Learn how Concerto can help you.

Question has a verified solution.

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

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…
Introduction This article is the first of three articles that explain why and how the Experts Exchange QA Team does test automation for our web site. This article explains our test automation goals. Then rationale is given for the tools we use to a…
Viewers will learn about the different types of variables in Java and how to declare them. Decide the type of variable desired: Put the keyword corresponding to the type of variable in front of the variable name: Use the equal sign to assign a v…
This video teaches viewers about errors in exception handling.
Suggested Courses

715 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