Converting Hex to Integer Value

I'm trying to convert hex code to the corresponding integer, which can then be used to display a character.
For example I have the code.
int i = 0xE7;
System.out.println(i);
System.out.write(i)This produces the output as expected with the first output outputting 231, and the second line outputting the corresponding character.
My problem comes when trying to make it so the hex code is variable.
For example, I receive an output of 7
This output is then the last digit of the hex code (so i check if needs to be converted to a, b etc.) then try and combine it with the prefix 0xE to create the hex code.
I'm not quite sure how to do this bit as I cant carry out
num = 7;
hex = "0xE"+num;
int i = hex;as the last line doesn't calculate due to hex being a string.
Many thanks for your help.

leesto wrote:
The char array is currently being created using:
char [] hexchar = "0123456789ABCDEF".toCharArray();
Look this is OK, you need to do nothing but just the following:
// I am using the very first example you provided
// i is the index for the char
String hex = "0E" + hexchar;
Integer.parseInt(hex, 16);
System.out.println(i);

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Convert hexa to integer

Hello,
I have a flat file in which I get a value in hexadecimal format.
Can we convert it in integer format in ODI ? I did'nt find anything about that.
Thanks in advance
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What is your target technology ?
There are ways to do it. One of the way is to create function
You can create ODI function to convert Hexadecimal to Integer.
For example if you are using Oracle as your staging or target technology .. you can use
Oracle you can use
SYS_OP_RAWTONUM('AA') or to_number('AA', 'xx').
Other can be directly using features of target or staging technologies to get the desired output.

Easier Way to convert Hex to Integer

This problem is mainly to do with a hex string to integer conversion. The device, connected via serial connection outputs hex in the format 0A00, when looking at it in hex. The first two digits are the data, the last two are attached to seperate data points. what I'm trying to do is to raster the last 2 digits off so that 2A00 becomes 2A and then convert the 2A into integer format (42). I have come up with a method to do this, but it is very messy and occasionally results in data loss. I have attached my vi (8.2). The large integer being subtracted is a constant that continues to come up for reasons I am not aware of.
another issue which I am coding through is the fact that sometimes a byte slips by, making 2A00 become 00BB or something of that format. Is there a way to scan the string, determine whether the first two digits or the last two digits are the valid ones and then seperate the valid string? In this code, it would be necessary to allow for the value 0000 to read 0.
If there is confusion, here is some examples of incoming data and desired output
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0005 -5
000B - 11
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Solved!
Go to Solution.
Attachments:
geiger read.vi ‏28 KB

Since you are reading 2 bytes, it looks like you should be dealing with a 16 bit number. Typecast to U16 rather than I32 like you are doing now. And all of that string manipulation make it look like you are getting a string of ASCII formatted characters like "0" "A" "1" "B" rather than a 2 byte string of ASCII characters 0A and 1B. Then you can split the U16 number and take the higher order byte.
I can't explain why you would be having a byte slip by unless it has something to do with all that string manipulation you are trying to do. But if it still happens, and you know one byte for the other is always zero. Just take the high order byte and add it to the low order byte. Since one is zero, it will have no effect on the other byte.
Message Edited by Ravens Fan on 07-07-2009 01:54 PM
Attachments:
geiger%20read[1]_BD.png ‏3 KB

HEX TO integer

Hi,
I am wondering if you know how to convert
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(you get the idea - drop that "String" bit, sorry)

Handling Exceptions with case statement - convert Exception to int value

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Exceptions have their types (classes) and messages (and maybe an embedded exception). That is, they have much richer internal status then an integer.
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FLAME on
Gone are the days of good old errno.
FLAME off

How to convert signed ascii hex to float value

Hi,
I have a requirement to convert IEEE ascii hex to float value.
Following code is working for +ve float value but it didn't work for -ve.
public static float hexToFloat(String str){
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for example "BE4CE1E6" should return -0.20 . (i verified in http://babbage.cs.qc.edu/IEEE-754/32bit.html )
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The problem is the parseInt method. It can only process numbers up to 2147483647 or 7FFFFFFF. Because that method expects a signed number.
The solution is to use Long.parseLong() instead.
public static float hexToFloat(String str){
float floatVal= 0.0f;
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Convert an integer value that was created with the Excel DATEVALUE formula to a valid date?

Hello everyone,
How can I convert an integer value that was created with the Excel DATEVALUE formula to a valid date in SSIS?
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You can use Script component for this and convert your integer values to Date. An example here is following:
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Vikash Kumar Singh || www.singhvikash.in

Sql syntax for converting a long datatype value in to a integer datatype value

I have to make a sql query where in i have a value of long datatype and i want to convert it into integer datatype value
null

It would have helped if you could have posted sample data.
now my requirement is to calculate the difference in hours between the start time and end time.Assuming you want the difference in time irrespective of the dates and the time is stored like HH24:MI:SS format, you could try something like:
SQL> WITH test_tab AS
2       (SELECT '09:12:33' start_time, '12:30:33' end_time
3          FROM DUAL
4        UNION ALL
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10                   - TO_DATE (start_time, 'HH24:MI:SS')
11                  )
12                * 24
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15 /
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Regards,
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Passing multiple integer values as parameter in SSRS

Hello,
I am trying to pass a comma separated multiple integer value parameter in SSRS report and it errors out complaining that it is not able to convert the nvarchar value to datatype int. But it works fine when I pass a single value. Here is the code I am using
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SELECT
id,count(*) as cnt
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A comma is, of course, a textual character and not an integer, thus the error you are getting. Multi-value parameters can be used for this.
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"You will find a fortune, though it will not be the one you seek." -
Blind Seer, O Brother Where Art Thou
Please Mark posts as answers or helpful so that others may find the fortune they seek.

Passing integer value in prompt

Hi Everyone,
I am trying to pass a smallint datatype value (ex: 2000) from a page prompt to a filter. When I try to view the result, I am getting an error;
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Hi,
Can someone help in correcting the syntax that applied on the filter: cast(@{variable1} as int). I tried lot of ways.
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Edited by: user598596 on Aug 4, 2009 9:38 PM
Edited by: user598596 on Aug 4, 2009 9:49 PM

Read integer values from spreadsheet and display the values in a table

Hi all,
I have integer values to read from a spreadsheet and display them in a table. I am using 'Read from spreadsheet file' in 'integer' mode. I would like to display these values in a table. The problem is that the table takes only 2d-array of string as input but not integer.
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Thank you.
Solved!
Go to Solution.

No don't take element by element just convert as a whole. See the attached example
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The best solution is the one you find it by yourself

Java code to convert - Hex to Dec

I'ld like to convert an Integer or a String from hexadecimal format to a decimal format;
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Can any one help me sending to me a java code that do it please?
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This doesn't convert hex to decimal, but it does convert hex to the character representation, which is what it sounds like you want. At any rate, given "30" it will print "0" and given "50" it will print "P". Also, given "P" it will print "is invalid".
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How to convert hex string to time stamp?

Hello everyone..
I am currently working on a project in which I have to read the data from a unit and display that data using LabVIEW. I am using serial communication for reading the data. The read data is in hex format.
Now, I want to convert this hex string to a time stamp value. I am reading total 16 bytes. How to convert this hex data to a time stamp value. I have developed a VI. But I want to know that the displayed time stamp is correct or not? Or suggest me some other solution.
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Thanks & Regards,
Manisha
Attachments:
Test.vi ‏7 KB

Hi mancan,
As Iam using LV2009 Iam unable to open your example.Anyway for converting hex to time stamp
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Large integer values

You could use DecimalData with scale 0.
Alexis Hassler
OOsphere France
(33) 4 37 49 01 28
-----Message d'origine-----
De: Kasrul Islam [SMTP:kasrul.islamchordiant.com]
Date: vendredi 3 mars 2000 21:04
A: kamranaminyahoo.com
Objet: (forte-users) Large integer values
Hi,
Can anyone out there help with a little problem, I have string of numbers
that I have extracted out of a file, the numbers are all over 10 digits
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Txt : TextData = new(Value = '12345');
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this works fine but when I try a number like this :
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<< Fichier: ATT00000.html>>

ReportQuery on Integer Values

Toplink seems to be inconsistent with SQL aggregate functions when running a report query on an integer field.
My code is similar to this:
// Toplink version 9.0.4.2
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report.addMaximum("id-max",builder.get("id"));
report.addStandardDeviation("id-std",builder.get("id"));
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This is not a problem for sum, min, and max, because these values should always be integers. But for average, variance, and standard deviation, floating point values are a likely result. The Toplink returned integer values are rounded down to the nearest whole number.
Running the equivalent SQL on Oracle 9i returns floating point results. The SQL is something like
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-J

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Converting Hex to Integer Value

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