Read method calls from a file.

I am working on an event driven program that has various events listed in a file that are supposed to be read in and used. I can go through the pain staking process of using StringTokenizer and .substring to figure which event is which, but I want to know if there would be an easier process of reading in the events. (Can't Cast them)
Any suggestions?
Shawn

Hi Again
U can go for StreamTokenizer in java.io
this is useful for tokenizing a Stream based on delimiters
It has Two Cons for both Type of Streams either Char or Bin
public java.io.StreamTokenizer(java.io.InputStream);
public java.io.StreamTokenizer(java.io.Reader);
The StreamTokenizer class takes an input stream and parses it into "tokens", allowing the tokens to be read one at a time. The parsing process is controlled by a table and a number of flags that can be set to various states. The stream tokenizer can recognize identifiers, numbers, quoted strings, and various comment styles.
U hav to invoke a method called nextToken Form which u will get a token which can be compared to find wether it is a word or character ....using the constanrs avlbl in StreamTokenizer class
TT_WORD indicates that the token is a word.
TT_NUMBER indicates that the token is a number.
TT_EOL indicates that the end of line has been read. The field can only have this value if the eolIsSignificant method has been called with the argument true.
TT_EOF indicates that the end of the input stream has been reached
Alll the Very Best
Rgds
Sriram

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Reading long text from excel file to an internal table

Hi
Can any body tell me how to read long text from excel file to an internal table.
When i am using this FM KCD_EXCEL_OLE_TO_INT_CONVERT then it is reading only 32 characters from each cell.
But in my excel sheet in one of the cell has very long text which i need to upload into a internal table.
may i know which FM or what logic i need to use for this problem.
Regards

Hi,
Here is an example program. It will upload an Excel file with two columns. You could also assign the Excel structure dynamically, but I wanted to keep the example simple. The main point is that the internal table (it_excel in this example) must match the Excel structure that you want to convert.
Remember, this is just an example to help you figure out how to properly use the technique. It will certainly need to be modified to fit your requirements, and as always there may be a better way to get the Excel converted... this is just one possibility that has worked for me in the past.
*& Report zexcel_upload_test *
REPORT zexcel_upload_test.
TYPE-POOLS: truxs.
TYPES: BEGIN OF ty_excel,
 col_a(10) TYPE n,
 col_b(35) TYPE c,
 END OF ty_excel.
DATA: l_data_tab TYPE TABLE OF string,
 l_text_data TYPE truxs_t_text_data,
 l_gui_filename TYPE string,
 it_excel TYPE TABLE OF ty_excel.
FIELD-SYMBOLS: <wa_excel> TYPE ty_excel.
PARAMETERS: p_file TYPE rlgrap-filename.
* Pass the file name in the correct format
l_gui_filename = p_file.
* Upload data from PC
CALL METHOD cl_gui_frontend_services=>gui_upload
EXPORTING
 filename = l_gui_filename
 filetype = 'ASC'
 has_field_separator = 'X'
CHANGING
 data_tab = l_data_tab
EXCEPTIONS
 file_open_error = 1
 file_read_error = 2
 no_batch = 3
 gui_refuse_filetransfer = 4
 invalid_type = 5
 no_authority = 6
 unknown_error = 7
 bad_data_format = 8
 header_not_allowed = 9
 separator_not_allowed = 10
 header_too_long = 11
 unknown_dp_error = 12
 access_denied = 13
 dp_out_of_memory = 14
 disk_full = 15
 dp_timeout = 16
 OTHERS = 17.
IF sy-subrc <> 0.
* MESSAGE ...
EXIT.
ENDIF.
* Convert from Excel into the appropriate itab
l_text_data[] = l_data_tab[].
CALL FUNCTION 'TEXT_CONVERT_XLS_TO_SAP'
EXPORTING
 i_field_seperator = 'X'
 i_tab_raw_data = l_text_data
 i_filename = p_file
TABLES
 i_tab_converted_data = it_excel
EXCEPTIONS
 conversion_failed = 1
 OTHERS = 2.
IF sy-subrc <> 0.
* MESSAGE ...
EXIT.
ENDIF.
LOOP AT it_excel ASSIGNING <wa_excel>.
* Do something here...
ENDLOOP.
AT SELECTION-SCREEN ON VALUE-REQUEST FOR p_file.
PERFORM filename_get CHANGING p_file.
* FORM filename_get *
FORM filename_get CHANGING p_in_file TYPE rlgrap-filename.
DATA: l_in_file TYPE string,
 l_filetab TYPE filetable,
 wa_filetab TYPE LINE OF filetable,
 l_rc TYPE i,
 l_action TYPE i,
 l_init_dir TYPE string.
* Set the initial directory to whatever you want it to be
l_init_dir = 'C:\'.
* Call the file open dialog without multiselect
CALL METHOD cl_gui_frontend_services=>file_open_dialog
 EXPORTING
 window_title = 'Load file'
 default_extension = '.XLS'
 default_filename = l_in_file
 initial_directory = l_init_dir
 multiselection = 'X'
 CHANGING
 file_table = l_filetab
 rc = l_rc
 user_action = l_action
 EXCEPTIONS
 file_open_dialog_failed = 1
 cntl_error = 2
 error_no_gui = 3
 OTHERS = 4.
IF sy-subrc <> 0.
 REFRESH l_filetab.
ENDIF.
* Read the selected filename
READ TABLE l_filetab INTO wa_filetab INDEX 1.
IF sy-subrc = 0.
 p_in_file = wa_filetab-filename.
ENDIF.
ENDFORM. " filename_get
Regards,
Jamie

Code for reading particular fields from the file placed in application

hi,
code for reading particular fields from the file placed in application server in to the internal table.

Hi,
Use the GUI_UPLOAD FM to upload the File into ur Internal Table.
DATA : FILE_TABLE TYPE FILE_TABLE OCCURS 0,
 fwa TYPE FILE_TABLE,
 FILENAME TYPE STRING,
 RC TYPE I.
CALL METHOD CL_GUI_FRONTEND_SERVICES=>FILE_OPEN_DIALOG
EXPORTING
 WINDOW_TITLE = 'Open File'
 DEFAULT_EXTENSION =
 DEFAULT_FILENAME =
 FILE_FILTER =
 INITIAL_DIRECTORY =
 MULTISELECTION =
 WITH_ENCODING =
CHANGING
 FILE_TABLE = FILE_TABLE
 RC = RC
 USER_ACTION =
 FILE_ENCODING =
EXCEPTIONS
 FILE_OPEN_DIALOG_FAILED = 1
 CNTL_ERROR = 2
 ERROR_NO_GUI = 3
 NOT_SUPPORTED_BY_GUI = 4
 others = 5
IF SY-SUBRC <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
 WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
READ TABLE FILE_TABLE INDEX 1 into fwa.
FILENAME = fwa-FILENAME.
 CALL FUNCTION 'GUI_UPLOAD'
 EXPORTING
 filename = filename
 FILETYPE = 'DAT'
 IMPORTING
 FILELENGTH =
 TABLES
 data_tab = itab
 EXCEPTIONS
 file_open_error = 1
 file_read_error = 2
 no_batch = 3
 gui_refuse_filetransfer = 4
 invalid_type = 5
 OTHERS = 6 .
 IF sy-subrc <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
 WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
 ENDIF.
Regards,
Balakumar.G
Reward Points if helpful.

How to read a byte[] from a file

Hi can someone help me to read a byte[] from a file. I need to save a byte[] to a file and then retrieve it later can someone help in this..
Thanx

there are actually docs on the classes ByteArrayInputStream and ByteArrayOutputStream here:
http://java.sun.com/javase/6/docs/api/
go there (copy & paste in browser) and text search for the above classes.
Then read into it. That way, you will come to a better comprehension of the entire thing. You may as well want to read this:
http://java.sun.com/docs/books/tutorial/essential/io/index.html
And for the future: if you have general problems, search API docs and tutorials first and solve them yourself. The guys around here can get pretty annoyed about "Teach me the entire Java Thing" (also called "someone do my homework") requests.
If you have a special problem, ie an Exception you don?t understand or a method wich you don?t know how it works, everybody will like to help you.
Only few real serial killers frequent these forums.

How can I input read a line from a file and output it into the screen?

How can I input read a line from a file and output it into the screen?
If I have a file contains html code and I only want the URL, for example, www24.brinkster.com how can I read that into the buffer and write the output into the screen that using Java?
Any help will be appreciate!
======START FILE default.html ========
<html>
<body>
 
<center>

Welcome to a DerekTran's Website! 
Underconstructions.... 
 </center>
 
Hello, 
 
I've been using the PWS to run the website on NT workstation 4.0. It was working
fine. 
The URL should be as below: 
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And suddently, it stops working, it can't find the connection. I tried to figure
out what's going on, but still NO CLUES. Does anyone
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PeerWebServer.doc
 
CannotFindServer.doc
 
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LMHOSTS file
 
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Issdmin doc
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</body>
</html>
========= END OF FILE ===============

Hi!
This is a possible solution to your problem.
import java.io.*;
class AddressExtractor {
 public static void main(String args[]) throws IOException{
 //retrieve the commandline parameters
 String fileName = "default.html";
 if (args.length != 0) fileName =args[0];
 else {
 System.out.println("Usage : java AddressExtractor <htmlfile>");
 System.exit(0);
 BufferedReader in = new BufferedReader(new FileReader(new File(fileName)));
 StreamTokenizer st = new StreamTokenizer(in);
 st.lowerCaseMode(true);
 st.wordChars('/','/'); //include '/' chars as part of token
 st.wordChars(':',':'); //include ':' chars as part of token
 st.quoteChar('\"'); //set the " quote char
 int i;
 while (st.ttype != StreamTokenizer.TT_EOF) {
 i = st.nextToken();
 if (st.ttype == StreamTokenizer.TT_WORD) {
 if (st.sval.equals("href")) {
 i = st.nextToken(); //the next token (assumed) is the '=' sign
 i = st.nextToken(); //then after it is the href value.
 getURL(st.sval); //retrieve address
 in.close();
 static void getURL(String s) {
 //Check string if it has http:// and truncate if it does
 if (s.indexOf("http://") > -1) {
 s = s.substring(s.indexOf("http://") + 7, s.length());
 //check if not mailto: do not print otherwise
 if (s.indexOf("mailto:") != -1) return;
 //printout anything after http:// and the next '/'
 //if no '/' then print all
 if (s.indexOf('/') > -1) {
 System.out.println(s.substring(0, s.indexOf('/')));
 } else System.out.println(s);
}Hope this helps. I used static methods instead of encapsulating everyting into a class.

How to read the data from Excel file and Store in XML file using java

Hi All,
I got a problem with Excel file.
My problem is how to read the data from Excel file and Store in XML file using java excel api.
For getting the data from Excel file what are all the steps i need to follow to get the correct result.
Any body can send me the code (with java code ,Excel sheet) to this mail id : [email protected]
Thanks & Regards,
Sreenu,
[email protected],
india,

If you want someone to do your work, please have the courtesy to provide payment.
http://www.rentacoder.com

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Simply put, you can't.
By why do you need to?

Reading the data from excel file which is in application server.

Hi,
Iam trying to read the data from excel file which is in application server.
I tried using the function module ALSM_EXCEL_TO_INTERNAL_TABLE. But it didn't work.
I tried just reading using open data set and read data set it is giving junk characters.
Please suggest me if you have any solution.
Best Regards,
Brahma Reddy

Hi Narendra,
Please see the below code I have written
OPEN DATASET pa_sfile for INPUT in text mode ENCODING DEFAULT MESSAGE wf_mess.
CHECK sy-subrc = 0.
DO.
READ DATASET pa_sfile INTO wf_string.
IF sy-subrc <> 0.
EXIT.
else.
split wf_string at wl_# into wf_field1 wf_field2 wa_upload-field3
wa_upload-field4 wa_upload-field5 wa_upload-field6 wa_upload-field7 wa_upload-field8
wa_upload-field9 wa_upload-field10 wa_upload-field11 wa_upload-field12 wa_upload-field13
wa_upload-field14 wa_upload-field15 wa_upload-field16 wa_upload-field17 wa_upload-field18
wa_upload-field19 wa_upload-field20 wa_upload-field21 wa_upload-field22 wa_upload-field23
wa_upload-field24 wa_upload-field25 wa_upload-field26 wa_upload-field27 wa_upload-field28
wa_upload-field29 wa_upload-field30 wa_upload-field31 wa_upload-field32 wa_upload-field33
wa_upload-field34 wa_upload-field35 wa_upload-field36 .
wa_upload-field1 = wf_field1.
wa_upload-field2 = wf_field2.
append wa_upload to int_upload.
clear wa_upload.
ENDIF.
ENDDO.
CLOSE DATASET pa_sfile.
Please note Iam using ECC5.0 and it is not allowing me to declare wl_# as x as in your code.
Also if Iam using text mode I should use extension encoding etc.( Where as not in your case).
Please suggest me any other way.
Thanks for your help,
Brahma Reddy

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HI ,
I wanted to read a data from XL file and write a data in XL file by generating a report .Can any body help me out.Many examples are available on discussion forums but when I try to save and run those Vi .I am not able to run Showing error .Please tell what is going wrong as I m having latest labview 8.6 .
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Sharmila.karale

Hi Adnan,
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SAVE TO EXCEL.llb ‏128 KB
excel.llb ‏1618 KB

Reading Sheet name from csv file.

Dear All,
I am doing one program where i am reading contents from .csv file from oracle forms. I m using utl_file for reading the contents from .csv file.
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regards,
Manish n

I'm not sure of the format of a CSV with sheets : I assume it's a spreadsheet with multiple sheets ?
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Kinect Explorer WPF C# read depth data from the file and conversion to skeleton

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READING AND WRITING FROM A FILE(WRITTEN IN ANOTHER LANGUAGE)

# Comment
INTEGER Declares integer type variable
STRING Declares string type variable
LET Assigns a variable
CALCULATE Performs an arithmetic calculation
PRINT Writes data to the console
PRINTLN As print, but followed by a new line
END Terminates the program
Each line of the program must begin with one of these words, and the language should not be case sensitive.
Tim Brailsford, 2007
G64ICP
COMMENT
Any line beginning with the # character is completely ignored.
Example:
# ignore this line!
INTEGER
The INTEGER reserved word declares an Integer variable, and assigns a default value of 0 to it.
Example:
INTEGER myInt
This example is equivalent to the Java statment "int myInt=0;"
STRING
The STRING reserved word declares a String variable, and assigns an empty string to it.
Example:
STRING myString
This is equivalent to the Java statement "String myString;"
LET
This assigns values to variables (either integers, or strings enclosed
in double quotes).
Examples:
LET myInt=42
LET myString="Hello World!"
CALCULATE
This performs numeric calculations upon values or variables, and assigns the result to a variable (which must have
been declared earlier). Four operators are supported: + *
and / (for addition, subtraction multiplication and
integer division respectively).
Examples:
CALCULATE myInt=2*2
CALCULATE myInt=myInt+24
CALCULATE myInt=intA/intB
PRINT and PRINTLN
These words both print to the console the
only difference being that PRINTLN appends a new line (as does
System.out.println in Java). These can print either text provided as an argument, or variables (string or integer).
Examples:
PRINTLN "Hello World!"
PRINT myString
PRINTLN myInt
END
This terminates the program, and prints a message to that effect.
TPL Example
To the left is an example TPL input file , to
calculate the factorial of 5. This should produce
an output similar to that shown overleaf (except
that calculates the factorial of 10).
# A TPL Program to calculate the factorial of 5
INTEGER myInt
INTEGER factorial
STRING myString
LET mystring="Factorial Program"
LET myInt=5
CALCULATE factorial=myInt*4
CALCULATE factorial=factorial*3
CALCULATE factorial=factorial*2
Tim Brailsford, 2007
G64ICP
PRINTLN mystring
PRINTLN
PRINT "The factorial of "
PRINT myInt
PRINT " is "
PRINTLN factorial
END
Documentation
Document your code by writing instructions explaining how to run it, listing all of the files you have submitted,
and specifying any limitations (eg you might want to say what platforms you would expect it to run on, and what
platforms you have tested it on). This document should be written as a plain text file (ie ASCII � MS Word binary
files are not acceptable) � and this file should be called README.TXT. This file should constitute the user
manual of your program, and should explain exactly how to use your program.
The README file should be the user manual for your language as implemented.
NB:
I want it to read values from the file as given above and execute the answer in the command prompt( as intented in the file above)
Thanks
Alam Ikenna

Hai I have one doubt in doing other peoples homework for them. Why bother?

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I have a method that reads temperatures from a data file and prints them to the monitor. I use a while loop to read each line of the file, but for some reason it doesnt skip the loop when readLine returns null. My question is how do i get the method to stop reading before it returns null...
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ok cool thanks for pointing that out guys i appreciate it...now i need to take those temps and convert them from Strings to doubles so they can be converted i tried this but im getting a NumberFormatException error...
public static void buildReport() throws IOException
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Read method calls from a file.

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