How to count number of lines in a file?

I am using a BufferedReader to read my file, but I like to know how to count the number of lines in a file is there a way to do that in Buffered Reader or do I have to use FileInputLineStream?

Well, if you know how to read one line with a Buffered reader, and you know how to keep reading lines until you run out, then all you have to to is initialize a counter to zero before you start reading, add 1 to it each time you read a line, and then examine its value when you're done.
Try that, and post again if you get stuck.
Just be careful how you construct your loop. "Off by one" errors are a common way to get bitten. It could happen if you count what you think is the last line, but you've actually already counted all the lines and you end up counting one extra for "there are no more lines".

Similar Messages

How to count number of lines in a DMEE Tree

Hi all,
My requirement is that in my DMEE tree I have to count entries of line item data(FPAYP). Suppose for entry of FPAYH there are two entries in FPAYP then for first line of FPAYP 1 should be printed and for next line of FPAYP 2 should be printed and so on.
Can anybody tell me how to do this?
Regards,
Azra.

Well, if you know how to read one line with a Buffered reader, and you know how to keep reading lines until you run out, then all you have to to is initialize a counter to zero before you start reading, add 1 to it each time you read a line, and then examine its value when you're done.
Try that, and post again if you get stuck.
Just be careful how you construct your loop. "Off by one" errors are a common way to get bitten. It could happen if you count what you think is the last line, but you've actually already counted all the lines and you end up counting one extra for "there are no more lines".

How to count the total lines of the file (including the file header)

Hi all,
I am working with Idoc to file scenario(FCC).
I need to map one of the field with a recound count ie.., count of the total lines of the file (including the file header).
Eg:Record Count-- mapping area:Total number of records in the file including file header The total line of the file (including the file header).
Can i get a help on this.
Thanks and Regards,
Manoj

Hi !
If there is a tag of your IDOC that occurs the same quantity of times as file lines you have to create in your target file, you could make a Java user defined function in graphical mapping that "caches the entire queue" (use the corresponding option button), that receives as input that field of the IDOC, and returns the "lenght" (.length property value) of that input parameter (it is an array) as output..that should be the file line quantity..you may also add 1 to that count, for the header.
Hope it helps.
Regards,
Matias.

How to Count number of words in a file....

Hi Experts,
I have uploaded the text file, from the application server, like this:
call function 'GUI_UPLOAD'
exporting
    filename = LV_ip_FILENAME
tables
    data_tab = LT_FILETABLE.
The text file contains some number character words.... like "sap labs india..... "
Now, I wanted to count number of words in an internal table LT_FILETABLE.... can anybody help me?

Hi,
Special Characters in Regular Expressions
The following tables summarize the special characters in regular expressions:
Escape character
Special character Meaning
Escape character for special characters
Special character for single character strings
Special character Meaning
. Placeholder for any single character
C Placeholder for any single character
d Placeholder for any single digit
D Placeholder for any character other than a digit
l Placeholder for any lower-case letter
L Placeholder for any character other than a lower-case letter
s Placeholder for a blank character
S Placeholder for any character other than a blank character
u Placeholder for any upper-case letter
U Placeholder for any character other than an upper-case letter
w Placeholder for any alphanumeric character including _
W Placeholder for any non-alphanumeric character except for _
[ ] Definition of a value set for single characters
[^ ] Negation of a value set for single characters
[ - ] Definition of a range in a value set for single characters
[ [:alnum:] ] Description of all alphanumeric characters in a value set
[ [:alpha:] ] Description of all letters in a value set
[ [:blank:] ] Description for blank characters and horizontal tabulators in a value set
[ [:cntrl:] ] Description of all control characters in a value set
[ [:digit:] ] Description of all digits in a value set
[ [:graph:] ] Description of all graphic special characters in a value set
[ [:lower:] ] Description of all lower-case letters in a value set
[ [:print:] ] Description of all displayable characters in a value set
[ [:punct:] ] Description of all punctuation characters in a value set
[ [:space:] ] Description of all blank characters, tabulators, and carriage feeds in a value set
[ [:unicode:] ] Description of all Unicode characters in a value set with a code larger than 255
[ [:upper:] ] Description of all upper-case letters in a value set
[ [:word:] ] Description of all alphanumeric characters in a value set, including _
[ [:xdigit:] ] Description of all hexadecimal digits in a value set
a f
      v Diverse platform-specific control characters
[..] Reserved for later enhancements
[==] Reserved for later enhancements
u2192 More
Special characters for character string patterns
Special character Meaning
Concatenation of n single characters
{n,m} Concatenation of at least n and a maximum of m single characters
{n,m}? Reserved for later enhancements
? One or no single characters
Concatenation of any number of single characters including 'no characters'
*? Reserved for later enhancements
+ Concatenation of any number of single characters excluding 'no characters'
+? Reserved for later enhancements
| Linking of two alternative expressions
( ) Definition of subgroups with registration
(?: ) Definition of subgroups without registration
1, 2, 3 ... Placeholder for the register of subgroups
Q ... E Definition of a string of literal characters
(? ... ) Reserved for later enhancements
for more details please refer the following,
[http://help.sap.com/abapdocu_70/en/ABENREGEX_SYNTAX_SIGNS.htm]
[http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/902ce392-dfce-2d10-4ba9-b4f777843182?QuickLink=index&overridelayout=true]
Thanks,
Renuka S.

How to count number of line items in BEX

Hello friends,
I am showing summarized data in BEX but i have to show one column number of records for that line .
For e.g.
Profit Center                        Document Number          amount
Newyork                                101                             1000
Newyork                                102                             2000
I have to show as
Profit Centre        Amount      Line Items
Newyork             3000           2
Please give me suggestion how to do it in BEX ?
Regards
Nilesh Vakil

Hi Nilesh,
          Check here...
https://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/009819ab-c96e-2910-bbb2-c85f7bdec04a
Re: Count the values of a characteristic
Thanks,
Vijay.

How to count number of lines inside methods() using the Doclet API

Wrote a custom doclet using the [Doclet API|http://java.sun.com/j2se/1.3/docs/tooldocs/javadoc/doclet/index.html ] .
The purpose for the doclet is to load Java source files and create stubs (which are identical Java source files but do not contain any method implementation details).
Instead, the method implementation details need to be replaced with blank lines...
public class MyDoclet {
     private static String TAB = "\t";
     public static boolean start(RootDoc root) {
          ClassDoc[] classes = root.classes();
          // Parse through class or interface
          for (ClassDoc clazz : classes) {
               Type superClass = clazz.superclassType();
               // Print Methods
               MethodDoc[] methods = clazz.methods();
               for (MethodDoc method : methods) {
                    Parameter[] parameters = method.parameters();
                    println();
                    if (!method.isPrivate()) {
                         print(TAB + method.modifiers() + " "
                                                + method.returnType().simpleTypeName() + " " + method.name());
                         print("(");
                         for (int i=0; i < parameters.length; i++) {
                              Parameter parameter = (Parameter) parameters;
                              print(parameter.type().simpleTypeName() + " " + parameter.name());
                              if (i != parameters.length - 1) {
                                   print(", ");
                         print(")");
                         println(" {");
                         println("\n");
                         println(TAB + "}");
          return true;
As one can see, I am just creating the method and placing the opening and closing curly braces (along with a new \n line escape sequence, in between).
Am not really that familiar with the Doclet API...
Question(s):
(1) What is the best way to figure out how many lines of code are inside each method and then use a for loop to insert the exact same number of blank lines inside the methods?
(2) Is there a way to do it using the com.sun.javadoc.SourcePosition.line() method?
Would really appreciate it if someone could help me because this is an important requirement (hence the 10 Duke Stars).
Happy coding to all,
Mike

This is not possible using the Doclet API, because JavaDoc does not store any information regarding implementation detail. Although MethodDoc#position will give you the line where the method is declared, there is no way to determine where the method body starts and ends.
If you need that much information, maybe you would be better of using a tool such as Eclipse's Abstract Syntax Tree parser. AST will provide you with line numbers for each code expression, hence it is relatively easy to compute the first and last line in a method body.

How to Count Number of completed line items in past 6 months / 12 months ?

How to Count Number of completed line items in past 6 months / 12 months ?
Hi,
I am trying to count "Number of Completed Line Items in Purchase Order Document" for my Key Figure ZPO_CNT.
Purchase Order document = ZEBELN
Line Item = ZEBELP.
I need to find and count if the Line Item has been received in the past 6 months from today and similarly in the past 12 months.
I have "Delivery Completed" field, ELIKZ.
So, based on this would I be able to calculate it in Query Designer?
If so, Please let me know how

Hello Deva
If youe want to calculate the completed line item for last 6 or 12 month then i think u will be displaying the query data for these montrhs...create a customer exit to give you date range and restric it in filter area....
Now Choose any of the below option
1. I would suggest to implement an additional key figure "counter" in cube and fill values with one for which delivery is completed.
Now use calculated key figure in Query Designer based on logic
IF counter = 1 THEN counter ELSE 0
OR
2. create a formula variable based on ELIKZ and use replacement path variable, it will display you no. of docs for which delivery is completed....
Award points if it solves your problem
Revert back in case of further assistance...
Thanks
Tripple k

Please let me know how to Count Number of completed line items in past 6 mo

How to Count Number of completed line items in past 6 months / 12 months ?
Hi,
I am trying to count "Number of Completed Line Items in Purchase Order Document" for my Key Figure ZPO_CNT.
Purchase Order document = ZEBELN
Line Item = ZEBELP.
I need to find and count if the Line Item has been received in the past 6 months from today and similarly in the past 12 months.
I have "Delivery Completed" field, ELIKZ.
So, based on this would I be able to calculate it in Query Designer?
If so, Please let me know how
Krishna

Hi Experts,
I dont have a defined Restricted key figure yet.
I have populated 0COMPL_DEL(Delivery Completed Indicator) and 0EBELN (Purchasing Document Number) and 0EBELP (Line Item Number in Purchasing Document) .
This is what I think how I need to calculate:
Number of completed line items in past 6 months:
If Delilvery Completed Indicator (0COMPL_DEL) = x, calculate No. of Line Items (ZPO_CNT) from 0CALDAY to 6 months
and
Number of completed line items in past 12 months:
If Delilvery Completed Indicator (0COMPL_DEL) = x, calculate No. of Line Items (ZPO_CNT) from 0CALDAY to 12 months
Please let me know if the logic is correct. If so, how I can create this in report

Counting number of lines in a text/csv file using xquery/xslt.

Hi,
I have a CSV file, I need to count the total number of lines in that file. This I have to use in OSB. My requirement is I have to count total no of lines in the $body file (CSV/flat file) and subtract header and footer lines from it.
EX:
header,1, @total_no_of_detal@
detail,1
detail,2
detail,3
detail,n
footer, 1
If suppose i have 10 detail lines, and I am getting body of the file as shown above,
then in the final file, I have to change the body of the file as:
header,1, *10*
detail,1
detail,2
detail,3
detail,n
footer, 1
Please advice how to do this in OSB.
Edited by: user12679330 on Aug 2, 2011 2:34 AM

I would suggest you to use MFL to convert the file into XML when you read it and then you can count the detail elements within the XML and update the values in Header element before writing the file again in flat file format again using MFL.
You can read the documentation of Format Builder utility which is used to define MFL here:
http://download.oracle.com/docs/cd/E21764_01/doc.1111/e15866/part_fb.htm
Alternatively, another approach is the read the whole flat file as a text string and then doing needed manipulations to get what you need. If you want to do it like this then you will need to consider following things:
1. Is the file in DOS format or Unix format? (To know the End of line character in use)
2. Does the file contain an end of line at the end of file? (whether there is an end of line char at the end of data of footer record)
Once you know above, you can try an xquery like following:
let $intermediateXML :=
<Root>
for $a in (tokenize($in, 'EOL'))
return
if (string-length($a) > 0)
then
<record>{$a}</record>
else ()
</Root>
let $count := count($intermediateXML/record)
let $outXML :=
<OutRoot>
for $i in 1 to $count
return
if (data($i) = 1)
then
<Record>{concat($out, $intermediateXML/record[$i]/text(), ',Count=',($count)-2)}</Record>
else
<Record>{concat($out, $intermediateXML/record[$i]/text())}</Record>
</OutRoot>
return op:concatenate($outXML/Record/text(), 'EOL')In Above XQuery, replace EOL with the end of line character which for unix wound be "&#xA ;" (remove quotes and space between the A and ; ) and for DOS would be "&#xD ;&#xA ;" (remove quotes and space between the A and ; and D ; )

Count the number of lines in each file in a directory

Hello,
I would like to count the number of lines for each file in my directory and subdirectories.
I wonder how can I count the lines of the specified files?
Here is the program which is listed the files in the specified directory:
                    String path = "C:/User/Studies/Pracices/src/Pract1";
       String files;
       File folder = new File(path);
       File[] listOfFiles = folder.listFiles();
       for (int i = 0; i < listOfFiles.length; i++)
        if (listOfFiles.isFile())
     files = listOfFiles[i].getName();
     System.out.println(files);

Ok so one more question.
Actually my path is pointing to one Directory and like here I can just read from one file that the name of the file should be specified in the path is it possible to help me in that part?
File f = new File("C:/User/Studies/Practices/src/Pract1/");
FileReader fr = new FileReader(f);
      BufferedReader br = new BufferedReader(fr);
      String str = br.readLine();
          LineNumberReader ln = new LineNumberReader(br);
          int count = 0;
          while (ln.readLine()!=null)
              count++;
          System.out.println("no. of lines in the file = " + count);

How to count number of sales orders generated in a month in SAP SD

Hi SD Gurus,
I have a very strange query from client. I have to count the number of sales order created in a month for a z report. For example 30 in Jan, 25 in Feb etc. Could anyone suggest me How to count number of sales orders generated in a month in SAP SD.
Regards
Vinod Kumar

Hi,
Goto the T.Code "SE16" or "SE16n" or "SE11".
Enter the table name as VBAK
Enter the created on date as the starting date of the period and to date as the end date.
Enter.
Click on "Number of Entries".It will tell you the number of entries created in a particular period.
If you want a report,goto the T.Code "VA05n".
Regards,
Krishna.

How to count number of ones in table

Hello,
i created one table 16x32 each cell is updating 1 byte of data,how to count number of one in all cell,and is it right way to calculate check sum??
thank you

The simplest way is to call GetTableCellRangeValues with VAL_ENTIRE_TABLE as the range, next summing array elements.
But I don't understand your comment on checksum, so this may not be the more correct method for your actual needs: can you explain what do you mean?
Proud to use LW/CVI from 3.1 on.
My contributions to the Developer Zone Community
If I have helped you, why not giving me a kudos?

How to count number of rows in table

can I get number of row in table except Count(*) in pl/sql
is there any other way

Also posted and answered here
how to count number of rows in table
count(*) will be the fastest way. It is only slow if the table has a vast number of rows, in which case why do you need to know the tables has 73552436467721 rows and not 73552436467737 rows. It doesn't seem to be much use. Either that or you are counting them a lot, which again seems rather pointless.

How to count number of online user

i am developing bid application using servlet/jsp. how to count number of online user ple help me.

hi,
may be the following code help you...
import javax.servlet.http.HttpSessionListener;
import javax.servlet.http.HttpSessionEvent;
public class ActiveUserCount implements HttpSessionListener {
     private static int activeUsers = 0;
     public void sessionCreated(HttpSessionEvent se) {
          activeUsers++;
     public void sessionDestroyed(HttpSessionEvent se) {
          if(activeUsers > 0)
               activeUsers--;
     public static int getActiveUsers() {
          return activeUsers;
}Dhaval

How to get the number of lines of a file?

Folks:
Is there a way to get the number of lines of a text file? I don't know if there is an existing method to do that.
Thanks a lot.

HI
I found some solution
other than increment loop and all
here is the code it might helpful to u
//returns the number of lines in a file
//author : Ravindra S
//Symphony software Hyderabad
try
RandomAccessFile randFile = new RandomAccessFile(csvFile,"r");
long lastRec=randFile.length();
randFile.close();
FileReader fileRead = new FileReader(csvFile);
LineNumberReader lineRead = new LineNumberReader(fileRead);
lineRead.skip(lastRec);
countRec=lineRead.getLineNumber()-1;
fileRead.close();
lineRead.close();
catch(IOException e)

How to count number of lines in a file?

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