Format a float in TextField

I need to show a float with only 2 decimal digits in a TextField. Like this:
5477.78

wow, 5 dollars 4 that!!!!
a dead ez and lazy way of doin it, off the top of me head would be .......
//f float to convert, dp decimal places to cut to
public static String chop(float f, int dp)
dp = (int)Math.pow(10,dp);
return Float.toString(((float)( (int)(f*dp)))/dp);
there u go, that works, its not very pretty, and you can probably do it more efficiently, but, it took under 3minutes ;-P
rob,

Similar Messages

Formatting a float in Java, help please!

Im trying to format a float in a JTable thats been taken from an SQL database, heres what ive got:
float price = results.getFloat(5);
row = new Vector();
row.addElement(new String(results.getString(1)));
row.addElement(results.getString(2));
row.addElement(results.getInt(3));
row.addElement(results.getInt(4));
row.addElement("�"+ (price));
rows.addElement(row);
so i've given the getFloat(5) a variable name 'price' - how do i format the float 'price' to two decimal places, like 0.00? is it some thing like:
float price.%2f = results.getFloat(5);
I cant remember, thanks!

yeh i tried to implement it, but no joy, the JTable still displays to 1 decimal place, which is very odd...
the JTable displays as strings, but its retrieving a float (results.getFloat(5)) so i thought if i called the results.getFloat as a string, then used:
Float price = Float.valueOf(results.getFloat(5)).floatValue();
String.format("%.2f", price);
it would work... i was wrong, lol

Read double from file containing 128 Bit formatted C-Floats

hi all,
the Problem:
i need to read double values out of a binary file. the binary was
created by a program in c and contains 128 bit float values (16 byte).
in c i can read the floats with the following command:
fscanf(fin,"%16.7f",&i);
but in java there is no function that can read this format. for me it
is not so important that the values are precise like in c. so if
i could convert or read such a value into a java double this would be
precise enough. any idea?
thanx,
grissi

You read in the bytes and then create a double from them using binary operations.
If you search the forums you will find example code which you can modify to your purpose.
Try using this search string, or some variation.
C double binary file

Changing date format while displaying in textfield

hi all,
i have created a form using swing in which date is being inputted and stored in database.Although the date is entered in textbox in dd/mm/yyyy format when i retrieve it back from the database it is displayed in yyyy-mm-dd hh:mm:ss format in the textfield.So how could i display in dd/mm/yyyy format?

it is displayed in yyyy-mm-dd hh:mm:ss formatThis is a sort of standard string transformation of a date object. You can choose different ones. Have a look at java.text.SimpleDateFormat.
P.S.
What do you do to open five threads for the same question?

Missing Invalid Format option with Spry TextField

I am inserting a Spry Validation Text Field into a form for an email address. The only options I have from the preview states menu in the property inspector are these: Initial, Required and Valid. There is no option for Invalid Format.
I am following along with an exercise in Dreamweaver CS5 Classroom In a Book Lesson 13.
I have worked back through the lesson in case I had missed something but nothing leaps out at me.
I would appreciate any assistance in tracking down the issue.

Hi,
I've checked the samples.
The standard submit example validates the fields the XHR example does not.
I added the following code from the XHR sample
if (Spry.Widget.Form.validate('register') == true)
Spry.Utils.submitForm('register', registerResponse);
However Spry.Widget.Form.validate('register') always returns true regardless of the state of the Spry validation
Any more ideas to get the XHR submit to recognise the state of the Spry validation for the form
Cheers
Phil

HTML Formatted Links in Dynamic TextField Trigger Popup Blocker

I recently updated the flash on my site to load all text
content as HTML from an XML file and display it in a couple of
dynamic text fields. Everything works as expected except that links
in the HTML text with a "_blank" target trigger popup blocking in
IE and Firefox. Any thoughts on why this is happening and what I
can do to fix it?
J

as3 textfields have a TextEvent.LINK you can use.

Formatted output (floats)

Hi everyone,
I spent so much time already looking for some classes or functions that I can use to display decimal numbers formatted with a specified width and number of significant figures, but I can't seem to find anything that works fine in Java 1.4
Does anyone know if there is something similar to printf(), but for Java?
I need to display number in the following format:
1.23
23.45 3.455
0.34 65.67 4.556
3.455 5.66 5.67 5.666
I need to have them aligned in columns.
Thanks for the help in advance.

1) Add a roundoff value exactly half of the last digit you'll retain - .005 if you are rounding to two places.
2)Convet to text: String s = "" + myFloat;
3)Find the decimal point: int decLoc = s.indexOf(".");
4)Truncate to the desired # of places: s = s.substring( 0, decLoc+2 );
5)Add enough spaces on the right to pad to the column width.
6)Use a monospaced font when you output.

Currency Formating for a Input Textfield (ASP)

I am using Dreamweaver CS3 and VBScript coding. I have a regular text field where the user will be entering in a dollar amount and ultimately I want a user to enter in 5000 and when they hit tab to the next field I want that number to appear as 5,000.00. Searched the forums for a while and there where different variations but none answered this questions.
Thanks

I don't use that language, but it looks as if FormatNumber() is what you're looking for.
http://www.w3schools.com/vbScript/func_formatnumber.asp
Mark A. Boyd
Keep-On-Learnin' :-)
If you are reading this via email, be aware that it may not be an accurate representation of my message. Login to read the actual message and/or to reply.

IR - 9.2 - how to format a number to a textfield in dashboard

Hello,
i am going to develop an individual Dashboard with free positionung textfields, almost all works, but how can i formatting the numbers?
here the script:
var Ausfall=ActiveDocument.Sections["Ergebnisse"].Columns["Ausfall"].GetCell(1);
var AB=ActiveDocument.Sections["Ergebnisse"].Columns["A B"].GetCell(1);
var ABprozw=AB/Ausfall;
AnzeigeABProz.Text=ABprozw; /* is a free positioning textfield in dashboard */
in the dashboard ist the value shown as
0.7793775542282301
but how can i get a number format as:
0,78
or
78,9%
are there any convert/formating function (to dashboard-textfields) in IR ?
mfg
Jens Rohloff

If you want the Percent signt o show up then you will need to treat the number as a string.
Another option
var ABprozw=AB/Ausfall * 100;
var ABprozw = Math.round(ABprozw)
var ABprozw = ABprozw/100
This will give you tne 0.78
Wayne Van Sluys
TopDown Consulting

Is there a way to convert a float to a currency format

Is there an object in Java that will format a float into some sort of currency format (string?)? Ideally if I have a float value of 3412.0 is there an easy way to get 3,412.00?
Thanks

Never tested this in production, but here's a start:
import java.text.*;
public class test
public static void main( String[] args )
String pattern = "\u00A4#,###.00";
DecimalFormat df = new DecimalFormat( pattern );
double[] nums = { 1f,
1.0f,
1.2f,
1.23f,
12f,
12.3f,
123.4f,
1234.5f,
1234.56f,
123456789,
123456789.9 };
for( int i = 0; i < nums.length; i++ ) {
System.out.println( nums[ i ] + " -> " + df.format( nums[ i ] ) );
output:
1.0 -> $1.00
1.0 -> $1.00
1.2000000476837158 -> $1.20
1.2300000190734863 -> $1.23
12.0 -> $12.00
12.300000190734863 -> $12.30
123.4000015258789 -> $123.40
1234.5 -> $1,234.50
1234.56005859375 -> $1,234.56
1.23456789E8 -> $123,456,789.00
1.234567899E8 -> $123,456,789.90

Float point format function --- "Beginner"

Hii every body
1-I want to format any float number to be with only two decimal digits
examble :
95.3213 converted to be 95.32
is there any function that can do this ???
2- I want to remove any spaces from any given string
examble:
mystring = "Hi my friend " coverted to be mystring = "Himyfriend"
thank you ...

1 Check out the API for java.text.DecimalFormat
double d = 95.3213;
NumberFormat nf = NumberFormat.getInstance();
nf.setMaximumFractionDigits(2);
System.out.println(nf.format(d);2 If you have java1.4 you can use the replaceAll method in string:
String myString = "Hi my friend ";
myString = myString.replaceAll("\\s", "");The regular expression "\s" matches all whitespace - spaces, tabs etc etc

How to bold a one word in a textfield

I would like to bold a few randomn words in a sentence used as a rawvalue in a textfield.
e.g. "This
word should be bold"
Does someone know how to acheive the above through scripting
Thank you in advance
Aditya

Hi Aditya,
I am not sure if this is much help to you. I do not know how to script what you are looking for.
However you can change the field format for each of the textfields. In LC Designer 8.2 select the textfield and go to the Object / Field window. Then change the Field Format from "Plain Text Only" to "Rich Text". When using the PDF form, you can change the format of the whole textfield or individual words. For example "Control + B" will give you bold text, "Control + U"; underline, "Control + I"; italic. When a field is active you can press "Control + E" and this will allow you to change the font type and size, etc.
If you are using an earlier version of LC Designer, then you have to make two changes in the Object window. From memory one is in the Field tab and the other in the Binding tab.
Good luck,
Niall

Check Floating Point Number

Hello All,
I am having some trouble checking the value of a field with Key Figure type Number with 8 byte floating point. I want to read that field and populate another field with an X if true. For example if that field is equal to 5,0000000000000000E+07 then i want to mark the other field with an 'X'.
The problem is in my code, how do i read that number in the fltp field, such as the number above. my code reads as follows for the 'X' field.
    if SOURCE_FIELDS-abc123 eq 5000000.
      RESULT = 'X'.
    endif.
Thanks everyone in advance

You don't need to worry about converting the code into standard format or floating, just implement your code as you want and it will automatically take care of the conversion. Basically 5,0000000000000000E+07 = 50,000,000.
thanks.
Wond

Format and Append

Regarding the format and append VI, what does this %.;%f HZ; means? I saw it in most of the driver's VI. Please enlighten me if you know the meaning. Thanks
Message Edited by cheyne on 03-20-2006 08:53 PM

the %.; switches off the localized decimal separator, so it is always "." (and not "," like on some european computers.)
the %f formats a floating point number and the " HZ" outpust the string "<space>HZ".
Thus if the input is a DBL 5.0 , the formatted output string would be "5.000000 HZ" everywhere. (Without the %.; at the beginning, the output would be "5,000000 HZ" e.g. In Germany.)
Check the online help, especially the page labeled "Format Specifiers Syntax Elements".
LabVIEW Champion . Do more with less code and in less time .

F suffix for floating point.

Okay, I'm a proficient c++ programmer and have been learning Java for only a few weeks now.
I have a question about the f suffix for floating point varibles such as float f = 3.14f;
The f suffix casts this as float right? which is the same as float f = (float) 3.14; Correct?
Why do we have to add the f suffix in the first place? Doesn't the compiler know that we want a float and not a double? (single-precision 32-bit instead of double precision 64 bit) I really do not understand the concept here or why they need the f suffix.
Can someone explain?

ThePHPGuy wrote:
The f suffix denotes that the literal is of a floating-point type.Yes. The d suffix does the same.
Java has two different types of floating-point numbers.Right.
The type double is the default type.Right.
The float type can have a double and a float literal. Is this true or false?No. At least not in any way I understand it.
I think you're confusing two things:
"floating point number" is any number in the IEEE floating point format.
"float" is a datatype holding a 32bit floating point number.
"double" is a datatype holding a 64bit floating point number.
floating point number literals can be either double literals (without suffix or if the "d" suffix is used) or float literals (when the "f" suffix is used).

Format a float in TextField

Similar Messages

Maybe you are looking for