Double problem in string conversion

I'm working on a web application. (this questions is not we related.. just giving some background to the problem) I populate a number of fields in a bean back in my business logic as Decimals. Then going up a level I do all the data manipulate I need to for display purposes and store the values as a String inside my bean. Then I pass that bean on to my jsp and it displays my values....
Now the problem I just realized I have is that in some cases the decimal values are larger then 8 digits in length. So when I convert to a string by saying decimalVariable+""
I end up with an exponential value.
There are several solutions to this... but the problem is that I have thousands of places this is being done... so instead of going in and changing every decimal to a bigDecimal or going in and changing the way I convert to a string in each place, I wanted to know if I could change the toString method for Decimal.. and how to go about doing that...

As far as being bad code... I'm keeping my mouth shut on that one.. because I've been known to do the same thing.. I just can't believe we have made it so far
into development without this being brought to anyone's attention.Didn't mean to offend you on the bad code. :) I thought the same ("how did it go so long?") when I found our problem (and many other problems in our code).
So my options are pretty much
1. change all double to BigDecimal
2. use numberFormatter anywhere it is being
converted to a string... or actually anywhere where
the number can possible be longer then 7 characters
long....Use a number formatter (such as DecimalFormat) everywhere. No need to figure out whether it is needed in each case.
I think the best solution would be to switch to BigDecimal.. but that would take a MAJOR amount of
work... I think there are around 6K java files in this project... probably every single one of them uses a double somewhere in the class...
hmmm July 1st Beta test deadline might be hard to meet :)Same reason why we're stuck on Java 1.3.1 at work...deadlines and possible regression issues. :(

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Thanks.

Where did this file come from? Some kind of Java or Ruby export? I don't think AI has anything in its SDK that would natively read that. You could just parse the string, looking for \u[4 characters]. I believe if you created a QChar and initialized it with the integer value of the four-character hex string, it would properly create the character.

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Dear Friends,
Problem with String to Int conversion
I am having a column where most of the values are numeric. Only 4 values are non numeric.
I have replaces those non numeric values to numeric in order to maintain the data type.
CASE Grade.Grade WHEN 'E4' THEN '24' WHEN 'E3' THEN '23' WHEN 'E2' THEN '22' WHEN 'E1' THEN '21' ELSE Grade.Grade END
This comes the result as down
Grade
_0_
_1_
_10_
_11_
_12_
_13_
_14_
_15_
_16_
_17_
_18_
_19_
_2_
_20_
_21_
_22_
_23_
_24_
_3_
_4_
_5_
_6_
_7_
_8_
_9_
Refresh
Now I want to convert this value to numeric and do some calculation
So I changed the formula as below
cast (CASE Grade.Grade WHEN 'E4' THEN '24' WHEN 'E3' THEN '23' WHEN 'E2' THEN '22' WHEN 'E1' THEN '21' ELSE Grade.Grade END as INT)
Now I get the following error
View Display Error
_ Odbc driver returned an error (SQLExecDirectW)._
Error Details
Error Codes: OPR4ONWY:U9IM8TAC:OI2DL65P
_State: HY000. Code: 10058. [NQODBC] [SQL_STATE: HY000] [nQSError: 10058] A general error has occurred. [nQSError: 17001] Oracle Error code: 1722, message: ORA-01722: invalid number at OCI call OCIStmtFetch. [nQSError: 17012] Bulk fetch failed. (HY000)_
SQL Issued: SELECT cast ( CASE Grade.Grade WHEN 'E4' THEN '24' WHEN 'E3' THEN '23' WHEN 'E2' THEN '22' WHEN 'E1' THEN '21' ELSE Grade.Grade END as Int) saw0 FROM "Human Capital - Manpower Costing" WHERE LENGTH(CASE Grade.Grade WHEN 'E1' THEN '20' WHEN 'E2' THEN '21' WHEN 'E3' THEN '22' WHEN 'E4' THEN '23' ELSE Grade.Grade END) > 0 ORDER BY saw_0_
Refresh
Could anybody help me
Regards
Mustafa
Edited by: Musnet on Jun 29, 2010 5:42 AM
Edited by: Musnet on Jun 29, 2010 6:48 AM

Dear Kart,
This give me another hint, Yes you are right. There was one row which returns neither blank nor any value.
I have done the code like following and it works fine
Thanks again for your support
Regards
Code: cast (CASE (CASE WHEN Length(Grade.Grade)=0 THEN '--' ELSE Grade.Grade END) WHEN 'E4' THEN '24' WHEN 'E3' THEN '23' WHEN 'E2' THEN '22' WHEN 'E1' THEN '21' when '--' then '-1' ELSE Grade.Grade END as Int)

String coversion problem.{some conversion required}

Hello all.,
presently i am facing one problem with string handling.,
I have to convert one string to another ..,
e,g.,
Source String is : -
*36,1, KH GOPEEKRISHN*, F, KRISHN DAS, M,55, SOUTH YASHVANT GANJ XYZ XYZ,400002
Desired String:-
*36,1 KH, GOPEEKRISHN*, F, KRISHN DAS, M,55, SOUTH YASHVANT GANJ XYZ XYZ,400002
the bold one is important.,
In source string we have *,KH GOPEEKRISHN* and i have to convert it into this form KH, GOPEEKRISHN
-Thanks in advance.,
Praveen

Hi sabre,
Thanx for the reply.
But i dont know this concept of look behind, can u suggest me a link whr i can find info regarding this.
^\\d+ ----> this i understood .
But not this
?<=wat i know is
(?=abc) matches zero characters only if they are followed by the expression abc.
(?!abc) matches zero characters only if they are not followed by the expression abc.
correct me if im wrong
Edited by: Manthana on Jan 22, 2008 3:57 AM

Double to String conversion

How do you convert a double to a String. Can't seem to find out how.
Thanks

double d = 2.2;
String dStr = ""+d;
or
dStr=Double.toString(d);

Convert double precision float string to a number

I am a newbie with Labview.
I have a GPIB link with a vector voltmeter and I receive the data as a double precision float string (IEEE standard 754-1985). I would like it to be recognized as a number, but I can't find the proper conversion function. The string to convert is 8 byte long. Does anyone have an idea how to do it? Thank you!

Asumming your data is big-endian, you should be able to simply typecast it to a DBL (see attache LV 7.0 example).
(It is possible that your DBL string is little-endian, in this case it will be slightly more complicated. Let us know )Message Edited by altenbach on 05-27-2005 04:49 PM
LabVIEW Champion . Do more with less code and in less time .
Attachments:
StringToDBL.vi ‏23 KB

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Hi All,
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      destination            = 'locl'
      expiration             = '1'
      immediately            = space
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        err_temseerror           = 8
        err_btcjob_open_failed   = 9
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German Special Characters in XSTRING to STRING conversion

Hi Experts,
I have a CSV file (created from a Windows Excel file) with German Special Characters (e.g. 'ä', 'Ä') and I am trying to read this into ABAP internal tables. By using the THTMLB tag 'thtmlb:fileUpload' I get an XSTRING and I am trying to convert this into STRING. However, wheny trying to do this I get an exception 'CX_SY_CONVERSION_CODEPAGE'.
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Note: lr_upload is my XSTRING object from the file upload, lv_content is a STRING.
In the CSV file the German special characters look fine and the SAP system is a Unicode system, but it seems like there are some problems with the conversions somehow. Any ideas from the experts?
Thanks a lot and Regards,
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As you mention a csv file I'm wondering if your encoding is wrong: I.e. when you create your instance of cl_abap_conv_in_ce you don't specify the encoding of your source hex string, so that means the default encoding is used, which should be UTF-8 in your case. So if your csv file is not encoded in UTF-8, specify the correct encoding in the create method and see if that helps.
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The OD and OA are the carriage return and line feed and yes the functona always appends these characters at the end of each line. Probably because this function is normally used to create files that a spreadsheet can read. There are several ways to remove the extra characters. Shown below is the string reversed and the String Subset function uses an offset of two. The output of that is reversed to get a string without the CR and LF. Also shown is getting the string length, subtracting 2 and wiring that to the length input of the String Subset function.
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Attachments:
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markf12 wrote
The problem is with the line of text (address, phone, etc) at the very top of the header, not the nav. It looks fine in Firefox and Safari but not in IE. I believe it's because of the IE margin doubling that I have learned about. I've got the string of text/ bullet list so it fills the space with 20 px space on each end. When IE adds extra margin it forces the last item (email address) down onto a second line.
I'm thinking of replacing all but the email address with a jpg image. Leaving the email address as a link that can be clicked. I was hoping to find a fix for this IE problem so I could keep it all as text which is a better practice as I understand it.
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Hi Experts,
Can any of you give an standard function module or conversion routine for String conversion to Quantity field.
The problem is I pass on 5 value as a string and while the system creates any sales orders, now in the quantity filed
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Thank you,
KishoreJ.

Hi,
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Thanks
With Regards
I.Muthukumar

Re: cannot be applied to (double,java.lang.String)

It's telling you what the problem is -- you're trying to pass a String in where a double is required. Java is a strongly typed language, which means that you can't expect types to change automatically into other types as needed.
You could, I suppose, parse the string, assuming that it holds a representation of a double. But if you look at the method in question, you'll see that it doesn't even use its second (double) argument.
So you should ask yourself:
1) should that method really take two arguments?
2) what is the second argument for, if I did use it?
3) what is the best type to represent the second argument?
(hint: with a name like "customerType", then an enum seems likely)
[add]
Too slow again.
Though I'll also add: please wrap any code you post in [code][/code] tags. It makes your code much easier to read.
Message was edited by:
paulcw

> String n ;
n = JOptionPane.showInputDialog(null, "Enter Month No.:");
pow(double,double) in java.lang.Math cannot be
applied to (double,java.lang.String)Read the error diagnostic carefully: the compiler found a pow() method
in the Math class, but it takes two doubles as its arguments. You,
however, supplied a double and a String as the parameter types.
The method found by the compiler cannot be applied to your parameters.
hint: you have to convert that String to a double,
kind regards,
Jos

Since downloading Firefox 4, I am having problems archiving gmail conversations from my inbox view. Also, when I go to enter a new event in google calendar, I now have to click the cursor in the box to type the event (it used to let me just start typing).

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I have had this problem; but while trying to fix another problem, I reset my preferences for Firefox and it fixed this problem as well. To reset preferences, follow this link: http://support.mozilla.com/en-US/kb/Resetting%20preferences

Problem with String variable

I am new to Java Programming.
I have a line of code that works and does what is supposed to.
faceData.getProfile("Lisa").removeFriend("Curtis");
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String name = "Lisa";
String fName = "Curtis";
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faceData.getProfile(name).removeFriend(fName);
What could be causing the problem?
I even added some lines to print out what is stored in the variables to verify that they are what they should be, but for some reason the variables do not work while putting the strings in quotes does. Any ideas?

I guarantee that something about your assertions are incorrect. Those variables are either not equal to the values you claim, or something else is going on. But it's not a problem with string variables versus string constants.
Edit: My best guess in lack of a real example from you, is that the strings in question have non-printable characters in them, such as trailing spaces or line feeds.

Little problem with Strings.

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You are actually making your users key in things like
"\026"? Not very user-friendly, I would say. But
assuming that is the best way for you to get your
input, or if it's just you doing the input, the way to
change that 4-character string into the single
character that Java represents by '\026', you would
use a bit of code like this:char encoded =
(char)Integer.parseInt(substring(inputString, 1),
16);
DrClap has the right idea, except '\026' is octal, not hex. So change the radix from 16 to 8. Unicode is usually represented like '\u002A'. So it looks like you want:String s = "\\077";
System.out.println((char)Integer.parseInt(s.substring(1), 8));Now all you have to do is parse through the String and replace them, which I think shouldn't be too hard for you now :)

Double problem in string conversion

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