FileInputStream or BufferedInputStream from String

Hi everybody,
I need to get a FileInputStream or a BufferedInputStream from a String.
Any ideas?
Regards,
Erik

Do you mean that you want to treat the string as a
stream, or that the string is the name of the file
you want to open?
In the case of the second, you can use the following FileInputStream constructor:
FileInputStream(String name)
Creates a FileInputStream by opening a connection to an actual file, the file named
by the path name name in the file system. � {�

Similar Messages

Help!! i dont know how to make use of token from string tokenizer :(

Hi,
I would like to ask how to manipulate the token that are taken from string tokenizer. For example :
input = a b 1 f 986
supposed output:
a
b
1
f
986
How to make the output look like this?
Output = (a,b,f),(1,986)
Below is the source code of Algebra.java
import java.io.*;
import java.util.*;
* Read and print, using BufferedReader from System.in, onto System.out
public class Algebra {
public static void main(String[] av) {
try {
BufferedReader is = new BufferedReader(new InputStreamReader(System.in));
String inputLine;
System.out.print("Input =");
while ((inputLine = is.readLine()) != null) {
System.out.println("Output="+inputLine);
StringTokenizer st =
new StringTokenizer(inputLine, ", |");
while (st.hasMoreElements())
System.out.println("Token: " + st.nextElement());
break;
is.close();
} catch (IOException e) {
System.out.println("IOException: " + e);
Thank You

You can modify this to serve your goal.
BufferedReader is=null;
try {
is = new BufferedReader(new InputStreamReader(new FileInputStream("Data.txt")));
StreamTokenizer st = new StreamTokenizer(is);
int n=0,k=0,q=0;
String[] s=new String[20];
String[] s0=new String[10];
while(st.nextToken() != StreamTokenizer.TT_EOF) {
        switch(st.ttype) {
          case StreamTokenizer.TT_EOL:
            s[k] = new String("EOL");k++;
            break;
          case StreamTokenizer.TT_NUMBER:
            s0[q] = Double.toString(st.nval);q++;
            break;
          case StreamTokenizer.TT_WORD:
            s[k] = st.sval; // Already a String
             k++;
            break;
          default: // single character in ttype
            s[k] = String.valueOf((char)st.ttype); k++;
        } //end of while
   //   Some output processing here
}catch(IOException ioe){
   ioe.printStackTrace();
}catch(ArrayIndexOutOfBoundsException bx){
   System.err.println(bx);
}finally{
       try{      if(is !=null)     is.close();}catch(IOException ioe){;}
}

Conversion from string "20041023 " to type 'Date' is not valid.

Hi ,
I have a table with one of the column(EmpHiredate) datatype is char(10). It has value like "20141023". I need to display this value as date format(dd/mm/yyyy) in report.
Following methods i tried in textbox expression but no luck.
=Format(Fields!EmpHireDate.Value,"dd/MM/yyyy")
=Cdate(Fields!EmpHireDate.Value)
Error:
[rsRuntimeErrorInExpression] The Value expression for the textrun ‘EmpHireDate.Paragraphs[0].TextRuns[0]’ contains an error: Conversion from string "20041023 " to type 'Date' is not valid.
Is it possible to convert string to date using SSRS textbox expression ? Can anyone help me with the solution.
Thanks,
Kittu

Hi Jmcmullen,
Found one more issue on the same. I have one value like "00000000" for the column(EmpHiredate)
, when i use above expression values(ex:"20141023")
are displaying in dd/MM/yyyy format in report except value like "00000000" and giving following error:
[rsRuntimeErrorInExpression] The Value expression for the textrun ‘EmpHireDate.Paragraphs[0].TextRuns[0]’ contains an error: Conversion from string "0000/00/00" to type 'Date' is not valid.
Even i tried to pass its original value("00000000") as below but no luck.
=IIF(Fields!EmpHireDate.Value = "00000000","00000000",Format(CDATE(MID(Fields!EmpHireDate.Value,1,4) + "/" + MID(Fields!EmpHireDate.Value,5,2) + "/" + MID(Fields!EmpHireDate.Value,7,2)),"dd/MM/yyyy"))
Also tried this:
=IIF(Fields!EmpHireDate.Value = "00000000","2000/10/21",Format(CDATE(MID(Fields!EmpHireDate.Value,1,4) + "/" + MID(Fields!EmpHireDate.Value,5,2) + "/" + MID(Fields!EmpHireDate.Value,7,2)),"dd/MM/yyyy"))
Please Suggest.
Thanks ,
Kittu

Removing binary characters/ special chrs from string entered by user

Dear gurus,
I have a string entered by users in database from where i am pulling data into SAP BW.
Th problem is that the string contains binary characters. It is showing error and cant be upoaded
Is there any function module/ code that removes binary data an special chrs from string??
Pls help. thanks.

Hi,
U can use the Tcode: RSKC,
to allow the special charecters...
otherwise if u r sure that u r facing only that type of errors..then u can allow the
errors in ERROR HANDLING tab present in the infopackage screen < Update tab
bye,
sunil4points

"scan from string" to timestamp doesn't work for 18:00:00 (6PM)

I just found a strange issue in LabVIEW. I hope I'm doing something silly, but I just may have found an unusual bug.
run the snippet below with the following for the input string: 03:00:00,18:00:00,17:00:00
Time converts fine for just about any other time EXCEPT 18:00:00 (6 PM) for which it is returned as 00:00:00 (midnight). If you even add a second to it (18:00:01) you get back the expected result.
Here's hoping I'm not loosing my mind
Matt Holt
Certified LabVIEW Architect
Solved!
Go to Solution.
Attachments:
TimeParseBug.vi ‏11 KB

As annoying as it may seem, this exact scenario is an abuse of the timestamp. A timestamp is meant to be used for absolute times. And that includes a date. As Ravens Fan already pointed out, the 0 seconds since January 1, 1904 GMT is used in all timestamp display routines to mean the canonical invalid timestamp and hence the timestamp control displays the default string indicating the actual date/time format rather than a specific date/time.
If you need an absolute timestamp, for instance because you do want to have a local time indication, although the date is not relevant, adding an offset of 86400 to all values would fix it once and for all. Now the timezone offset can't cause the timestamp to reach 0 ever, even if you reside west of GMT, and it will be fine (until you start to do timestamp arithmetic that involves subtraction of relative timespans, then you would have to make the offset big enough that this will never get an issue). The current date would serve as a nice offset for that, which would be MattH's last suggestion. Nice to see that the Scan from String routine actually does use the passed in timestamp as default value and only replaces the values it is configured to parse.
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions

Scan from string error 85

Hi Everybody,
I'm trying to use LabView to
process some data.  The data, although it was collected via labview,
has been written out to csv file format.  I have been able to
successfully open the file and use the search split string function to
remove the "header" from the data stream.  Now I'm trying to parse the
header to extract some pieces of the info that is there.  I'm trying to
do this with the Scan from String VI.
So
far I've been able to retrieve the Specimen ID from the first line of
the header by setting the format string input of Scan from String as
"Specimen ID ,%s", which works just fine.  Problem is, when I
adjust
the format string to include the next piece of data I want, I
inevitably get an Error 85, which is a failed scan. In fact, I
get an err85 every time I try to extract something from after the
second line. I've attached a VI in which I cut and pasted an
example header string in as a string constant and an example of how I'm
trying to extract the values. I've tried playing around with
spaces and different formats, but get the err85 no matter what I do
(unless I extract the first line). I have a hunch that it has
something to do with the EOL marker, but no idea how to work around it.
A search of posts here show that a lot of people have issues with the
scan from string vi, but nobody I could find had this exact
problem. I've also considered using the spreadsheet spring to
array function, but because I have a mix of commas and EOLs it doesn't
seem to work either. HELP! I really don't want to have to write this
over in VBA/Excel.
Thanks,
Turk
Message Edited by YoungTurk on 07-29-2005 10:36 AM
Attachments:
Scan.vi ‏12 KB

You should probably parse it line by line (See attached, LabVIEW 7.1)..
The attached example shows one possibility to get all the Items and values out. Not all values are strictly numeric so you would need to adapt the code a little bit. (This is just a very rough 1 minute draft).
You might want to cosider to extract all values into a cluster for further processing, Have a look at the example posted in this thread . It can be easily adapted to read the values in the proper format (DBL, I32, Date, String, etc.) depending on the item name.
Good luck!
LabVIEW Champion . Do more with less code and in less time .
Attachments:
ScanMOD.vi ‏30 KB

Wrong use of "Scan From String" function in a while loop?

Hi,
I've got a "Scan From String" function inside a while loop. On the first iteration it converts correctly the number passed by the input string (for example 4) But on the second one it has only spaces (one or more \s) as input string.
I expected to obtain a zero as output (as it does always that it can not make any conversions, as I am supposed to) but indeed, i subtracts 1 from the previous number (according to the number indicated as example I would obtain a 3 as output)
What's wrong with this?
Does the function fails on this case?
The rest of the diagram o the VI is expected to manage a 0 on that situation, like others in which the conversion is not made.
Andres.

I have simplified the VI evading calls to other VIs and trying to reproduce the mistake.
The type of string I introduce to reproduce the mistake is:
clock 3 (30) clock (40)
Forgetting to introduce a number between the second "clock" and the following parenthesis, I would manage it programmatically with code that isn't included.
Then "Scan From String" is supposed to do not make a conversion. But it leaves a 2 as output (in this example)
I have realised, unbelievable but true, that it has matter with the number I substract to the output number (if it were 2, I would obtain 1 as output and so on)
Excluding that, I got the conversion made before as output, 3, on the second time that "Scan From String" executes. But, how can this func
tion as bad?
I am using LV4 on an old PC. I have tried to reproduce it with LV6 and it works. But it isn't desirable for me, I would have to convert a lot of VIs and surely I will find a lot of errors due to the conversion (I have already tried)
Attachments:
EXTCLOCK.VI ‏26 KB

CRIO: Unflatten from string into lvclass not working in deployment

Hello,
I am working on a problem for some hours now and I need some help.
I am using a cRIO-9022. I need to do some tasks, and I created a couple of classes which contain the parameters and the methods. They contain using dynamic dispatch VIs. I have an array of these classes (all derived from a parent class) which is my "configuration". I am using "flatten to string" and saving those file on disk. "Unflatten from string" is working fine. These file is created on a LV WIndows Application.
I need to use this file on my cRIO: Unflatten from string, and then work with the array of my classes. When running the cRIO Main VI it's working fine. But when building the application and deploying it as startup, it's not working. I am getting:
Error 1403 occurred at Unflatten From String in Gantry CommEngine.vi->RT Main.vi
Possible reason(s):
LabVIEW: Attempted to read flattened data of a LabVIEW class. The data is corrupt. LabVIEW could not interpret the data as any valid flattened LabVIEW class.
What I tried so far:
- Added the whole lvlib containing the classes and also every single class to "Source files / always included".
- Created constants of the array (containing the classes) to the VI (forcing LV to include the classes?)
- Loaded the file from cRIOs flash and also by shared variable
What else can I do?
Thanks a lot for support!

I tried to reproduce the matter, but couldn't.
I attached my example to the post.
What it does:
It creates a class with only a string a bool and a number. This class oblect is saved to C:/somename.xml. The number is a random number.
In the second case the same file is read and the number broadcasted to a variable.
It worked quite fine building it as a startupexe.
Nothing else was necessary. Does it work for you?
Attachments:
class exe.zip ‏45 KB

Removing non-numeric characters from string

Hi there,
I need to have the ability to remove non-numeric characters from a string and I do not know how to do this.
Does any one know a way?
Example:
Present String: (02)-2345-4607
Required String: 0223454607
Thanks in advance

Dear NickM
Try this this will work...........
create or replace function char2num(mstring in varchar2) return integer
is
-- Function to remove Special characters and alphebets from phone no. string field
-- Author - Valid Bharde.(India-Mumbai)
-- Date :- 20 Sept 2006.
-- This Function will return numeric representation.
-- The Folowing program is gifted to NickM with respect to his post on oracle site regarding Removing non-numeric characters from string on the said date
mstatus number :=0;
mnum number:=0;
mrefstring varchar2(50);
begin
mnum := length(mstring);
for x in 1..mnum loop
if (ASCII(substr(upper(mstring),x,1)) >= 48 and ASCII(substr(upper(mstring),x,1)) <= 57) then
mrefstring := mrefstring || substr(mstring,x,1);
end if;
end loop;
return mrefstring;
end;
copy the above program and use it at function for example
SQL> select char2num('(022)-453452781') from dual;
CHAR2NUM('(022)-453452781')
22453452781
Chao!!!

Get Time Stamp will milli seconds from string time stamp format

Hi Guys,
I am trying to get the time stamp with milli seconds value from string format time data,
Attached the snippet (Get milli seconds to Time stamp)I tried.
Attached Sub VI Convert string to time stamp
When run,I am not getting the time string indicator with milli seconds value even though the format have <%2u> .
please guide me on this.
..AND Finally i will be converting the date and time string output to time stamp data type
Attachments:
Convert_String_to_TimeStamp.vi ‏13 KB
Get Milli seconds to Time stamp.png ‏25 KB

You do realize you could have just used a single Scan From String to get the timestamp, right?
There are only two ways to tell somebody thanks: Kudos and Marked Solutions
Unofficial Forum Rules and Guidelines
Attachments:
Get Timestamp.png ‏43 KB

Scan From String White Space

i all,
I'm trying to use Scan From String in order to parse some data coming in from UDP.
Input String: ASCII [00 01 02 03 ... FF]
What I want: s[00 .. 30] d[12], d[34], d[56] leftover s[37 38 39 ... FF]
ATTEMPT1
Format String: %49s%2d%2d%2d
What I get: s[00-09] RUNTIME ERROR!
ATTEMPT2
Format String: %49[^]%2d%2d%2d
What I get: Only allows first output. Will error out if I use any additional outputs from Scan From String
ATTEMPT3
Format String: %49[^(0xFF)]%2d%2d%2d Value in () is ASCII character FF.
What I get: s[00 .. 30] d[12], d[34], d[56] leftover s[37 38 39 ... FF]
It appears as though when I use %##[^] it thinks I'm looking for the ENTIRE string so it will not let me add any more Formatting. If I add a delimiter other than ^ it will run, and it will work presuming that character isn't within the first 49 characters... and I can't guarentee that it won't.
I'm aware I can parse my string using subsets and whatnot... but Scan From String is so elegant. It would be great if %S allowed for white space... or if $##[^] would simply take the first ## characters and allow me to Format after that.
Is there a simple, elegant way to do this? I wish my dataset was only 3-4 outputs. It'd be ideal if I could. Thanks.
Edit:
It might be more helpful if I provide a less abstract example:
I have an ASCII Header (Finite Length String), a Sender IP (Finite Length String), a Timestamp, a Message ID (Finite Length Decimal), A Message in ASCII ( '1' actually means 0x31, not 0x01) And for some ungodly reason... no delimiters.
So I was HOPING %##s%##s%<%H:%M:%s>t%##d (With leftover string to be my message) would work, but if any white space is contained within there... it messes up.

I cannot provide exact strings because the string is actually ASCII characters, most of which aren't displayable.
I have a string where I have:
24 ASCII Characters representing 6x U32 Header Data
13 ASCII characters represening the sender IP (string)
12 ASCII Characters representing the name of the message (String)
12 ASCII Characters representing 3x U32 Data
12 ASCII Characters represneting the name of packet (String)
12 ASCII Characters representing 12x U8 Data
256 ASCII Characters represening 256x U8 Data
etc...
It would be ideal to simply Scan from the string and output the data with the appropriate data types already assigned instead of splitting string and type casting each individualy. But if, for example, my header starts with an ASCII representation of a U32 of 2560(decimal) it would look like this: [00][00][0A][00]. ASCII 0A is considered white space. So my header would only contain 2 ASCII characters instead of the desired 24.

How to remove the comma from string

Hi,
I Have string like below :
String some1="123,44.22";
I want to remove comma from string and final output should be 12244.22.
public class getOut{
public static void main(String args[]){
String some1="123,44.22";
getChars(int 0,some1.length(),char[] dst,0);
can somebody in the forum give me idea how to remove comma from the String and
have a string without comma.
Thanks
Jack

int idx = oldString.indexOf(',');
if(idx >= 0)
newString = oldString.substring(0, idx) + oldString.substring(idx + 1);or for jdk 1.4 and later
str = str.replaceAll(",", "");

How does "Unflatten From String" take a type and return a value of that type?

http://zone.ni.com/reference/en-XX/help/371361E-01/glang/unflatten_from_string/
How exactly does the "type" argument for "Unflatten From String" work? I need to create a VI that takes a type, passes it as an argument to several calls of the "Unflatten From String" function, and returns an array containing elements of the type originally passed. The "Unflatten From String" function seems to do some magic though, because the type of the "value" that it outputs changes depending on the type it is passed as input. How do I do the same magic in my VI?
Ultimately, what I need to accomplish is an unflatten-list operation. Given a type T and a byte string of length L (which contains a concatenation of T elements that are flattened to their bytes), create a VI that unflattens all the types in the string and return an array of length (L / sizeof(T)) that contains each type.
Note: performing the unflatten-list operation is trivial, but I cannot for the life of me figure out how to do it in a VI that takes a type and returns an array of the appropriate type. By the way, my data is being given to me from another source, so please don't bother suggesting that I should be flattening an array using LabVIEW's "Flatten To String" function in the first place. My data is not given in LabVIEW's array format: http://zone.ni.com/reference/en-XX/help/371361B-01/lvconcepts/flattened_data/
Thanks a ton!
-Wakka

Take a look at this example: You can see that the flattened string contains several bytes. The first four bytes contain the length of array (number of elements). Since the data type is U32, the next 32 bits (4 bytes) contains the value of the first element, and so on. Could you possibly use this scheme to do what you want to do? Other data types present different outputs. You would have to experiment with them.
- tbob
Inventor of the WORM Global

Unflatten from string takes long time to execute in x64

Hi All,
I am running into an issue where "Unflatten from String" is taking enormous amout of memory n time in LV 2012 SP1 x64 to execute. I pass in a NOT flattened string to this function and it consumes ~5 Gigs of memory and takes more than 10 minutes to execute it. On x86, it executes almost instantly.
It only happens if the input is not a flattened string.
Is this a known bug?
I have attached the vi here for you to see the problem. If you run it on x64, it might take more than 10 mins to execute and your system will be in a hung state.
Ritesh
Attachments:
Flat String to Data bug.vi ‏9 KB

LVCoder wrote:
With "x64" I meant LV x64. It executes instantly on LV x86 running on Win 64 bit but on LV x64 it takes like eternity.
I know it cannot unflatten it and I want it to return an error. My actual code can receive a flattened or NOT flattened string and I have a case structure which handles different strings differently.
Be careful with that terminology, it only applies to the Windows Operating System with respect to 32-bit and 64-bit processors. There is no such thing as LabVIEW x64, or LabVIEW x86. The property terminology is LabVIEW 32-bit (the most common one, most people use, even on 64-bit OS's since it is the most fully supported), and LabVIEW 64-bit (not commonly used, doesn't have full support of all add-on modules and toolkits, and is mainly only used by people who need LabVIEW to analyze very large datasets.)

Convert from String data type to Character data type

Hi...,
I'm a beginner. I try to make a program. But I don't know how to convert from string to data type. I try to make a calculator with GUI window. And when somebody put "+" to one of the window, I just want to convert it to Character instead of String.
Sorry of my bad english..
Please help me....
Thanks

String s = "a+b";
char theplus = s.charAt(1);

FileInputStream or BufferedInputStream from String

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