How to write empty line in text file

hey
i want to insert one empty line in text file.
how to write this.
i declared
data: emptyrec(240) type c value space,
and used
TRANSFER emptyrec to e_file.
but its not inserting empty line in the record.
is there any special way have to do.
ambichan.

hai anand,
I am posting the code snippet.
i have commented that transfer line in '----
' like this
pls refer below.
ambichan
DATA: PAGENO(4) TYPE N VALUE 1,
      DATAKBN(2) TYPE N VALUE 1,
      SUBNO(3) TYPE N VALUE 1,
      VPAGENO(4) TYPE C,
      VDATAKBN(2) TYPE C,
      VSUBNO(3) TYPE C,
      VREC(255) TYPE C,
      VRECORD(255) TYPE C,
      EMPTYREC(255) TYPE C VALUE SPACE,
      VCODE(10) TYPE C,
      VNAME2(35) TYPE C,
      VPAYDAT(10) TYPE C,
      VSGTXT(60) TYPE C VALUE SPACE,
      VSGTXT1(10) TYPE C,
      VKINGAKU(15) TYPE C VALUE SPACE,
      VBIKKO(30) TYPE C VALUE SPACE,
      VBELNR(10) TYPE C VALUE SPACE,
      VDMBTR(15) TYPE C,
      VGLT0-KSLVT(15) TYPE C,
      VGLT0-TSL01(15) TYPE C,
      VGLT0-TSL02(15) TYPE C,
      VGLT0-TSL03(15) TYPE C,
      VGLT0-TSL04(15) TYPE C,
      VGLT0-TSL05(15) TYPE C,
      VKIN(15) TYPE C,
      VTEGA(15) TYPE C.
FORM FRM_OUTPUT_DATA.
SORT ITAB_OUTPUT_SUMMARY BY LIFNR DTYPE.
SORT ITAB_OUTPUT_ITEMS   BY LIFNR DTYPE BELNR.
IF P_DISP = 'X'."checkボクスを選ぶ場合、ファイル作成処理へ行く
OPEN DATASET E_FILE FOR OUTPUT IN TEXT MODE.
IF SY-SUBRC <> 0.
WRITE: 'error',SY-SUBRC.
EXIT.
ENDIF.
LOOP AT ITAB_LIFNR.
PERFORM LISTDATA.
PAGENO = PAGENO + 1.
SUBNO = 1.
ENDLOOP.
CLOSE DATASET E_FILE."ファイルクローズ
ENDFORM.                               " End of frm_output_data
FORM LISTDATA.
DATA:
    WK_PAY_AMOUNT LIKE BSEG-DMBTR,   " 純支払額算出用
    VWK_PAY_AMOUNT(15) TYPE C,
    GLT0-TSL05_VAL LIKE GLT0-TSL05.
READ TABLE ITAB_OUTPUT_SUMMARY
         WITH KEY   LIFNR = ITAB_LIFNR-LIFNR DTYPE = 1.
BSIK-DMBTR = ITAB_OUTPUT_SUMMARY-DMBTR * WK_RATIO.
GLT0-TSL01 = ITAB_OUTPUT_SUMMARY-DMBTR * WK_RATIO.
READ TABLE ITAB_OUTPUT_SUMMARY
         WITH KEY   LIFNR = ITAB_LIFNR-LIFNR DTYPE = 2. " 区分：2
GLT0-TSL02 = ITAB_OUTPUT_SUMMARY-DMBTR * WK_RATIO.
READ TABLE ITAB_OUTPUT_SUMMARY
         WITH KEY   LIFNR = ITAB_LIFNR-LIFNR DTYPE = 3. " 区分：3
GLT0-TSL03 = ITAB_OUTPUT_SUMMARY-DMBTR * WK_RATIO.
READ TABLE ITAB_OUTPUT_SUMMARY
         WITH KEY   LIFNR = ITAB_LIFNR-LIFNR DTYPE = 4. " 区分：4
GLT0-TSL04 = ITAB_OUTPUT_SUMMARY-DMBTR * WK_RATIO.
READ TABLE ITAB_OUTPUT_SUMMARY
         WITH KEY   LIFNR = ITAB_LIFNR-LIFNR DTYPE = 5. " 区分：5
GLT0-TSL05 = ITAB_OUTPUT_SUMMARY-DMBTR * WK_RATIO.
glt0-tsl05 = glt0-tsl05 + glt0-tsl04.
WK_PAY_AMOUNT = GLT0-TSL05 + GLT0-TSL04.
CHECK WK_SUBRC = 0.
BSEG-KOART = ' '.                    情報不要
CLEAR: BSEG-SGTXT, BSEG-DMBTR, TGSBT-GTEXT, BKPF-BELNR.
BSEG-KOART = 'Y'.                    " フラグ：ヘッダに相殺額を出力
CLEAR: BSAK-DMBTR.
READ TABLE ITAB_OUTPUT_SUMMARY
       WITH KEY   LIFNR = ITAB_LIFNR-LIFNR DTYPE = 6. " 区分：6
BSAK-DMBTR = ITAB_OUTPUT_SUMMARY-DMBTR * WK_RATIO.
WK_PAY_AMOUNT = WK_PAY_AMOUNT - BSAK-DMBTR.
WRITE : / PAGENO,
           SUBNO,
           DATAKBN,
           ITAB_LIFNR-LIFNR,
           ITAB_LIFNR-NAME2(25),
           P_PAY_T,
           GLT0-TSL01,
           GLT0-TSL02,
           GLT0-TSL03,
           GLT0-TSL04,
           GLT0-TSL05.
VPAGENO = PAGENO.
VSUBNO = SUBNO.
DATAKBN = 1.
VDATAKBN = DATAKBN.
VCODE = ITAB_LIFNR-LIFNR.
VNAME2 = ITAB_LIFNR-NAME2.
VPAYDAT = P_PAY_T.
VGLT0-TSL01 = GLT0-TSL01.
VGLT0-TSL02 = GLT0-TSL02.
VGLT0-TSL03 = GLT0-TSL03.
VGLT0-TSL04 = GLT0-TSL04.
VGLT0-TSL05 = GLT0-TSL05.
CONCATENATE VPAGENO VSUBNO VDATAKBN VCODE VNAME2 VPAYDAT VSGTXT VKINGAKU
VBIKKO VBELNR VGLT0-TSL01 VGLT0-TSL02 VGLT0-TSL03
VGLT0-TSL04 VGLT0-TSL05 INTO VREC SEPARATED BY ','.
CLEAR: BSAK-DMBTR, BSID-DMBTR, BSAD-DMBTR, BSEG-DMBTR, BSIK-DMBTR,
         WK_10 , WK_11 , GLT0-TSL05.
READ TABLE ITAB_OUTPUT_SUMMARY
       WITH KEY   LIFNR = ITAB_LIFNR-LIFNR DTYPE = 7. " 区分：7
BSID-DMBTR = ITAB_OUTPUT_SUMMARY-DMBTR * WK_RATIO.
WK_PAY_AMOUNT = WK_PAY_AMOUNT - BSID-DMBTR.
郵送料の出力処理
READ TABLE ITAB_OUTPUT_SUMMARY
       WITH KEY   LIFNR = ITAB_LIFNR-LIFNR DTYPE = 8. " 区分：8
BSAD-DMBTR = ITAB_OUTPUT_SUMMARY-DMBTR * WK_RATIO.
WK_PAY_AMOUNT = WK_PAY_AMOUNT - BSAD-DMBTR.
READ TABLE ITAB_OUTPUT_SUMMARY
       WITH KEY   LIFNR = ITAB_LIFNR-LIFNR DTYPE = 9. " 区分：9
BSEG-DMBTR = ITAB_OUTPUT_SUMMARY-DMBTR * WK_RATIO.
WK_PAY_AMOUNT = WK_PAY_AMOUNT - BSEG-DMBTR.
READ TABLE ITAB_OUTPUT_SUMMARY
         WITH KEY   LIFNR = ITAB_LIFNR-LIFNR DTYPE = 10.
WK_10 =     ITAB_OUTPUT_SUMMARY-DMBTR * WK_RATIO.
READ TABLE ITAB_OUTPUT_SUMMARY
         WITH KEY   LIFNR = ITAB_LIFNR-LIFNR DTYPE = 11.
WK_11 =     ITAB_OUTPUT_SUMMARY-DMBTR * WK_RATIO.
GLT0-TSL05 =   WK_PAY_AMOUNT - WK_10 - WK_11.
WK_PAY_AMOUNT = WK_PAY_AMOUNT - GLT0-TSL05.
   VWK_PAY_AMOUNT = WK_PAY_AMOUNT.
   VKIN = WK_10.
   VTEGA = WK_11.
   CONCATENATE VREC VWK_PAY_AMOUNT VKIN VTEGA INTO
         VRECORD SEPARATED BY ','.
   TRANSFER VRECORD TO E_FILE.
    WRITE :
            VWK_PAY_AMOUNT,
            WK_10,
            WK_11.
   WRITE:/.
BSEG-KOART = 'X'.                   " フラグ：請求金額を出力
LOOP AT ITAB_OUTPUT_ITEMS WHERE LIFNR = ITAB_LIFNR-LIFNR
                            AND   DTYPE = 5.          " 区分：5
    BSEG-SGTXT   = ITAB_OUTPUT_ITEMS-SGTXT.          " 明細テキスト
    GLT0-KSLVT   = ITAB_OUTPUT_ITEMS-DMBTR * WK_RATIO.     " 金額
    TGSBT-GTEXT = ITAB_OUTPUT_ITEMS-GTEXT.              BKPF-BELNR   = ITAB_OUTPUT_ITEMS-BELNR.
   SUBNO = SUBNO + 1.
   VSUBNO = SUBNO.
   DATAKBN = 2.
   VDATAKBN = DATAKBN.
   VGLT0-KSLVT = GLT0-KSLVT.
   VBIKKO = TGSBT-GTEXT.
   VBELNR = BKPF-BELNR.
   VSGTXT1 ='請求金額:'.
   CLEAR VRECORD.
CONCATENATE VSGTXT1 BSEG-SGTXT INTO VSGTXT.
CONCATENATE VPAGENO VSUBNO VDATAKBN VCODE VNAME2 VPAYDAT VSGTXT
VGLT0-KSLVT VBIKKO VBELNR INTO VRECORD SEPARATED BY ','.
TRANSFER VRECORD TO E_FILE.
   WRITE :/ VPAGENO,VSUBNO,VDATAKBN,'請求金額:', VSGTXT, VGLT0-KSLVT,
            VBIKKO,VBELNR.
ENDLOOP.
CLEAR: BSEG-SGTXT,GLT0-KSLVT,BKPF-BELNR.
LOOP AT ITAB_OUTPUT_ITEMS WHERE LIFNR = ITAB_LIFNR-LIFNR
                            AND   DTYPE = 6.          " 区分：6
    BSEG-SGTXT   = ITAB_OUTPUT_ITEMS-SGTXT.          " 明細テキスト
    IF ITAB_OUTPUT_ITEMS-SHKZG = CNS_CREDIT.       " 金額
      GLT0-KSLVT = ITAB_OUTPUT_ITEMS-DMBTR * WK_RATIO.
    ELSEIF ITAB_OUTPUT_ITEMS-SHKZG = CNS_DEBIT.
      GLT0-KSLVT = ITAB_OUTPUT_ITEMS-DMBTR * WK_RATIO * -1.
    ENDIF.
TGSBT-GTEXT = ITAB_OUTPUT_ITEMS-GTEXT.          " 事業領域テキスト
BKPF-BELNR   = ITAB_OUTPUT_ITEMS-BELNR.          " 伝票番号
SUBNO = SUBNO + 1.
VSUBNO = SUBNO.
DATAKBN = 3.
VDATAKBN = DATAKBN.
VGLT0-KSLVT = GLT0-KSLVT.
VBIKKO = TGSBT-GTEXT.
VBELNR = BKPF-BELNR.
VSGTXT1 ='相殺金額:'.
CLEAR VRECORD.
CONCATENATE VSGTXT1 BSEG-SGTXT INTO VSGTXT.
CONCATENATE VPAGENO VSUBNO VDATAKBN VCODE VNAME2 VPAYDAT VSGTXT
VGLT0-KSLVT VBIKKO VBELNR INTO VRECORD SEPARATED BY ','.
TRANSFER VRECORD TO E_FILE.
concatenate vpageno vsubno vdatakbn
WRITE :/ PAGENO,SUBNO,DATAKBN,'相殺金額',BSEG-SGTXT, GLT0-KSLVT,
         TGSBT-GTEXT, BKPF-BELNR.
ENDLOOP.
   CLEAR VRECORD.
*Insert empty line.
TRANSFER EMPTYREC TO E_FILE.
DATAKBN = 3.
VDATAKBN = DATAKBN.
SUBNO = SUBNO + 1.
VSUBNO = SUBNO.
VSGTXT ='源泉金額'.
VDMBTR = BSID-DMBTR.
CONCATENATE VPAGENO VSUBNO VDATAKBN VCODE VNAME2 VPAYDAT VSGTXT
VDMBTR INTO VRECORD SEPARATED BY ','.
TRANSFER VRECORD TO E_FILE.
WRITE :/ PAGENO, SUBNO,DATAKBN, ITAB_LIFNR-LIFNR,ITAB_LIFNR-NAME2,
         P_PAY_T,'源泉金額', BSID-DMBTR.
CLEAR: VDMBTR, VSGTXT, VRECORD.
SUBNO = SUBNO + 1.
VSUBNO = SUBNO.
VSGTXT = '郵送料'.
VDMBTR = BSAD-DMBTR.
CONCATENATE VPAGENO VSUBNO VDATAKBN VCODE VNAME2 VPAYDAT VSGTXT
VDMBTR INTO VRECORD SEPARATED BY ','.
TRANSFER VRECORD TO E_FILE.
WRITE :/ PAGENO, SUBNO,DATAKBN,ITAB_LIFNR-LIFNR,ITAB_LIFNR-NAME2,
         P_PAY_T,'郵送料', BSAD-DMBTR.
CLEAR: VDMBTR, VSGTXT, VRECORD.
SUBNO = SUBNO + 1.
VSUBNO = SUBNO.
VSGTXT = '振込み手数料'.
VDMBTR = BSEG-DMBTR.
CONCATENATE VPAGENO VSUBNO VDATAKBN VCODE VNAME2 VPAYDAT VSGTXT
VDMBTR INTO VRECORD SEPARATED BY ','.
TRANSFER VRECORD TO E_FILE.
CLEAR: VDMBTR, VSGTXT, VRECORD.
WRITE :/ PAGENO,SUBNO,DATAKBN,ITAB_LIFNR-LIFNR,ITAB_LIFNR-NAME2,
        P_PAY_T,'振込み手数料',BSEG-DMBTR.
*その他の支払いの処理
SUBNO = SUBNO + 1.
VSUBNO = SUBNO.
VSGTXT = 'その他の支払い'.
VDMBTR = GLT0-TSL05.
CONCATENATE VPAGENO VSUBNO VDATAKBN VCODE VNAME2 VPAYDAT VSGTXT
VDMBTR INTO VRECORD SEPARATED BY ','.
TRANSFER VRECORD TO E_FILE.
WRITE :/ PAGENO,SUBNO,DATAKBN,ITAB_LIFNR-LIFNR,ITAB_LIFNR-NAME2,
        P_PAY_T, 'その他の支払い',GLT0-TSL05.
                                 glt0-tsl05.
ULINE.
CLEAR: VREC, VRECORD,VCODE,VNAME2,VPAYDAT,VSGTXT,VSGTXT1,VKINGAKU.
CLEAR: VBIKKO,VBELNR,VDMBTR,VGLT0-KSLVT,VGLT0-TSL01,VGLT0-TSL02.
CLEAR: VGLT0-TSL03,VGLT0-TSL04,VGLT0-TSL05,VKIN,VTEGA,VWK_PAY_AMOUNT.
ENDFORM.

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<pre>
Hi
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System.out.print("Group No : ");
temp=buff.readLine();
write.println(temp);
}catch(Exception e){
System.out.println(e);
Please correct If it is wrong and help me as soon as possible
Thank you...............

hi,
I have a different approach of the solution to your problem.
suppose you have entries in your file without any extra line feed between each two entries.
the following program entirely reads your data into a bean list, changes a specific bean attribute and writes it to your data source.
(you should adapt it to your needs)
import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
public class FileReplace {
     public List<MyBean> readFile(BufferedReader in) throws IOException{
          String line;
          List<MyBean> beanList = new ArrayList<MyBean>();
          MyBean bean = null;
          int i=0;
          while((line=in.readLine())!=null){
               if(line.trim().equals("***")){
                    beanList.add(bean);
                    i = 0;
               }else{
                    switch (i) {
                    case 0:
                         bean = new MyBean();
                         bean.setAttribute1(line);
                         i++;
                         break;
                    case 1:
                         bean.setAttribute2(line);
                         i++;
                         break;
                    case 2:
                         bean.setAttribute3(line);
                         i++;
                         break;
                    default:
                         break;
          return beanList;
     public void writeToFile(List<MyBean> beanList, String outputFilePath) throws IOException{
          FileWriter out = new FileWriter(outputFilePath);
          for (int i = 0; i < beanList.size(); i++) {
               out.write(beanList.get(i).toString());
          out.flush();
          out.close();
     public void test(){
          //BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
          String filePath = "D:/file.txt";
          try {
               BufferedReader in = new BufferedReader(new FileReader(filePath));
               //read data
               List<MyBean> beanList = readFile(in);
               // edit a bean attribute
               beanList.get(0).setAttribute2("prasad");
               //write beans back to file
               writeToFile(beanList, filePath);
          } catch (FileNotFoundException e) {
               e.printStackTrace(); //handle appropriately this exception
          } catch (IOException e) {
               e.printStackTrace();//handle appropriately this exception
          }catch (Exception e) {
               e.printStackTrace();//handle appropriately this exception
     class MyBean{
          String attribute1;
          String attribute2;
          String attribute3;
          public final static int ATTRS_NUMBER = 3;
          public String getAttribute1() {
               return attribute1;
          public void setAttribute1(String attribute1) {
               this.attribute1 = attribute1;
          public String getAttribute2() {
               return attribute2;
          public void setAttribute2(String attribute2) {
               this.attribute2 = attribute2;
          public String getAttribute3() {
               return attribute3;
          public void setAttribute3(String attribute3) {
               this.attribute3 = attribute3;
          @Override
          public String toString() {
               return attribute1+"\n"+attribute2+"\n"+attribute3+"\n***\n";
     public static void main(String[] args) {
          FileReplace instance = new FileReplace();
          instance.test();
}hope it helps

How to write new line on resource file.

Hello Everyone,
Can you please help me add new row on resource file, here is the code i have used to read my resource file.
I have no idea on how to add new line... Please help
private void btnBrowse1_Click(object sender, EventArgs e)
BrowseFile();
//versionIncrement();
if (txtInputfile.Text.Length > 0)
PathSelection = txtInputfile.Text;
oDataSet = new DataSet();
//now am reading the files fro the path that is selected
XmlReadMode omode = oDataSet.ReadXml(PathSelection);
for (int i = 0; i < oDataSet.Tables[2].Rows.Count; i++)
string comment = oDataSet.Tables["data"].Rows[i][2].ToString();
//the elements array contain all the columns filled
string[] elements = comment.Split('-'); //when it reaches the comma, it will jump to the next line
string font = elements[0]; //Font
string datestamp = elements[1]; //DateStamp
string commentVal = elements[2]; //Comment
string[] row = new string[] { oDataSet.Tables["data"].Rows[i][0].ToString(), oDataSet.Tables["data"].Rows[i][1].ToString(), font, datestamp = DateTime.Now.ToString(), commentVal };
Gridview_Input.Rows.Add(row);

Hello
Sitholimela,
>> Can you please help me add new row on resource file, here is the code i have used to read my resource file.
From your description, it seems that your resource file is a XML format file, if so, you could also have a try to use
LINQ To XML which is easy to operate the XML file to add new row to your resource file, and here is an example to show how to add a new element/row to the specific tree:
Linq to XML Add element to specific sub tree
Regards.
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How to read long line from text file

Hi,
I just faced problem when reading a big text file.
BufferedReader br = new BufferedReader(new FileReader("D:\\afile.txt"));
String str;
int i;
while ((str = br.readLine())!=null)
i++;
//do some work here...
...This code throws exception:
Exception in thread "main" java.lang.OutOfMemoryError: Java heap spaceSo I thought file line is very long. When I opened it in FAR it only displays no more than 4096 characters as a line.
Help me to read a text file that's line is very long?

try,
$ java -X
-Xmixed mixed mode execution (default)
-Xint interpreted mode execution only
-Xbootclasspath:<directories and zip/jar files separated by ;>
set search path for bootstrap classes and resources
-Xbootclasspath/a:<directories and zip/jar files separated by ;>
append to end of bootstrap class path
-Xbootclasspath/p:<directories and zip/jar files separated by ;>
prepend in front of bootstrap class path
-Xnoclassgc disable class garbage collection
-Xincgc enable incremental garbage collection
-Xloggc:<file> log GC status to a file with time stamps
-Xbatch disable background compilation
-Xms<size> set initial Java heap size
-Xmx<size> set maximum Java heap size
-Xss<size> set java thread stack size
-Xprof output cpu profiling data
-Xrunhprof[:help]|[:<option>=<value>, ...]
perform JVMPI heap, cpu, or monitor profiling
-Xdebug enable remote debugging
-Xfuture enable strictest checks, anticipating future default
-Xrs reduce use of OS signals by Java/VM (see documentation)
-Xcheck:jni perform additional checks for JNI functions
The -X options are non-standard and subject to change without notice.

How to write Strings in a text file with BufferedWriter

I've got a Vector object full of Strings objects, I'm interested in wrinting these Strings in a text file with a BufferedWriter , I would apreciate some code, thank you

http://java.sun.com/products/jdk/1.2/docs/api/java/io/BufferedWriter.html
"PrintWriter out = new PrintWriter(new BufferedWriter((new FileWriter("foo.out")));"

How to know a line of text file is ending with line feed or return?

hi all, i have a program that read log file that generated by other service (apache http server for example), i want to know that each line is ending with "\r", "\n" or "\r\n" so i can skip them in the next time, like this:
int char_counter=0;
BufferedReader reader = new BufferedReader(new FileReader(logFileName));
while((line=reader.readLine())!=null){
       char_counter+=line.length()+x_value;
}and the next time read the log file, i will skip all the lines that read in previous time.
BufferedReader reader = new BufferedReader(new FileReader(logFileName));
reader.skip(char_counter);
while((line=reader.readLine())!=null){
       char_counter+=line.length()+x_value;
}with x_value is 1 or 2 depended on line end with "\n" or "\r\n".
so, how to know which is the char line ending with?
Edited by: secmask on Feb 21, 2009 5:46 AM

Alright, the BufferedReader method readLine() reads all text until it finds a \n character. And then next time you call it it will automatically continue from where it left out.
try this out it should show it as an example
import java.io.*;
public class readLineTest {
    static FileOutputStream filename;
    static BufferedReader input;
    public static void main(String[] args)
        try
            filename = new FileOutputStream("logFile.txt", false);
        catch (IOException e)
            //blank
        PrintStream output = new PrintStream(filename);
        output.println("this is the first line");
        output.println("this is the second line");
        output.println("this is the third line");
        try
            input = new BufferedReader(new FileReader("logFile.txt"));
        catch(IOException e)
            //blank
        for(int i = 0; i < 3; i++)
            try
                System.out.println(input.readLine());
            catch(IOException e)
                //blank
}

How to write from beginning of text file?

Hello all,
All we have to do is to modify just first 2 lines of a 200,000 line files. I can do UTL_FILE.FCOPY to copy from line 3 to end of file and create a new file (FILE1). Now open a new file (say FILE2) and write the modified version of first two lines and then read the file (FILE1) which has rest of the original contents to write to this FILE2. But this process is taking for ever (around 30 minutes).
It would have been easy if I can open FILE1 and just write the first 2 lines. But when I open in append mode I can only write only at the bottom of the file. I tried UTL_FILE.FSEEK but it is not working when the file is opened in Append mode.
Anyone with a solution / suggestion / workaround is greatly appreciated.
Thanks in advance,
Manohar

Francois,
I know the command in Unix to concatenate. There are other easy ways if I can make HOST command work on the application server instead of my local machine. To my surprise both HOST and TEXT_IO are able to work only on my local machine.
I was under the same impression as you are and trying to execute HOST providing Unix commands. Nothing working ... finally when I tried
HOST('echo abc > c:\sample.txt');
it crreated sample.txt on my local machine c:\
Let me know if I am missing something.
Thanks
Manohar

How to write/insert lines in a file from top

I am opening a writing to a file as follows:
(part of the code which does so)
FileOutputStream file; // declare a file output object
PrintStream r;
file = new FileOutputStream("filename") + ".properties",true);
r = new PrintStream( raj);
r.println ( value + "=" + data.getString(value) );
r.close();
This prints in file line after line like
A
B
C
How can I make it to print/insert new line right at the top ?
That is if I print A, then B, then C, how can I make it to get
C
B
A
in the file ?
Help is much appriciated.

Use a RandomAccessFile then you can position the
cursor anywhere in the file.Yes, but that still doesn't allow data to be inserted unless all following data is shifted to make room for the insertion. (If you don't shift, the inserted data will overwrite following data already there.)

How copy just line in text file with cat? (SOLVED)

Hi.
How i make to copy just only line in text file with cat?
For example:
[:0.0]
file=/home/Arch/./.wallpaper.png
mode=0
bgcolor=# 0 0 0
I want copy just "/home/Arch/./.wallpaper.png" part.
Actually i want create a shortcut for last wallpaper set from Nitroget, then i put this in SLim background.
Recently i use hsetroot for wallpaper (~/.wallpaper.png) and i create a shortcut in /usr/share/slim/theme/MYTHEME whith ln -s ~/.wallpaper.png /usr/share/slim/theme/MYTHEME/background.png.
I want make a same with Nitrogen.
I now this looks like crazy, but...
Sorry my English.
Last edited by kramerxiita (2008-06-04 16:50:48)

moljac024 wrote:
kramerxiita wrote:
moljac024 wrote:How can you make SliM change the background ? You link the theme background to another file ?
Yes. In theme directory i put background.png shortcut for my wallpaper. So, when a change wallpaper, slim background change too.
Example:
ln -s mywallpaper.png /usr/share/slim/themes/default/background.png
So, Slim background always is my wallpaper.
So the wallpaper has to be a *.png ?
No, jpg is possible. But when you create a symbolic link, remember put the extension too. If change png to jpg, change a symbolic link extension.
But, remember if slim theme directory have background.png and background.jpg, Slim always choice .png. So, put only one this.

How to get the content of text file to write in JTextArea?

Hello,
I have text area and File chooser..
i wanna the content of choosed file to be written into text area..
I have this code:
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.*;
public class Test_Stemmer extends JFrame {
public Test_Stemmer() {
super("Arabic Stemmer..");
setSize(350, 470);
setDefaultCloseOperation(EXIT_ON_CLOSE);
setResizable(false);
Container c = getContentPane();
c.setLayout(new FlowLayout());
JButton openButton = new JButton("Open");
JButton saveButton = new JButton("Save");
JButton dirButton = new JButton("Pick Dir");
JTextArea ta=new JTextArea("File will be written here", 10, 25);
JTextArea ta2=new JTextArea("Stemmed File will be written here", 10, 25);
final JLabel statusbar =
              new JLabel("Output of your selection will go here");
// Create a file chooser that opens up as an Open dialog
openButton.addActionListener(new ActionListener() {
   public void actionPerformed(ActionEvent ae) {
     JFileChooser chooser = new JFileChooser();
     chooser.setMultiSelectionEnabled(true);
     int option = chooser.showOpenDialog(Test_Stemmer.this);
     if (option == JFileChooser.APPROVE_OPTION) {
       File[] sf = chooser.getSelectedFiles();
       String filelist = "nothing";
       if (sf.length > 0) filelist = sf[0].getName();
       for (int i = 1; i < sf.length; i++) {
         filelist += ", " + sf.getName();
statusbar.setText("You chose " + filelist);
else {
statusbar.setText("You canceled.");
// Create a file chooser that opens up as a Save dialog
saveButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae) {
JFileChooser chooser = new JFileChooser();
int option = chooser.showSaveDialog(Test_Stemmer.this);
if (option == JFileChooser.APPROVE_OPTION) {
statusbar.setText("You saved " + ((chooser.getSelectedFile()!=null)?
chooser.getSelectedFile().getName():"nothing"));
else {
statusbar.setText("You canceled.");
// Create a file chooser that allows you to pick a directory
// rather than a file
dirButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae) {
JFileChooser chooser = new JFileChooser();
chooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
int option = chooser.showOpenDialog(Test_Stemmer.this);
if (option == JFileChooser.APPROVE_OPTION) {
statusbar.setText("You opened " + ((chooser.getSelectedFile()!=null)?
chooser.getSelectedFile().getName():"nothing"));
else {
statusbar.setText("You canceled.");
c.add(openButton);
c.add(saveButton);
c.add(dirButton);
c.add(statusbar);
c.add(ta);
c.add(ta2);
public static void main(String args[]) {
Test_Stemmer sfc = new Test_Stemmer();
sfc.setVisible(true);
}could you please help me, and tell me what to add or to modify,,
Thank you..

realahmed8 wrote:
thanks masijade,
i have filter the file chooser for only text files,
but i still don't know how to use FileReader to put text file content to the text area (ta) ..
please tell me how and where to use it..How? -- See the IO Tutorials on Sun for the FileReader (and I assume you know how to call setText and append in the JTextArea).
Where? -- In the actionPerformed method (better would be a separate thread that is triggered through the actionPerformed method, but that is probably beyond you at the moment), of course.
Give it a try.

How to write data to an XML file present under application server

frnds: can ne one tell me, how to write data in to a file, which is present under a application server
Ex: i want to write a string data in to a file test.txt which is present under "http://localhost:8080/<some_webapp>/test.txt"
Note:i have deploted a service<some_webapp> under Tomcat/webapps dir

Very simple. A servlet can writes to that file if it has the good rights.
In the servlet get (or post) method, use a code like this:
import java.io.*;
protected void doGet(HttpServletRequest req, HttpServletResponse resp) {
try {
String filePath = this.getServletContext().getRealPath("/text.txt");//See http://java.sun.com/products/servlet/2.2/javadoc/javax/servlet/ServletContext.html#getRealPath(java.lang.String)
         PrintWriter writer = new PrintWriter (filePath);
        //or BufferedWriter out = new BufferedWriter(new FileWriter(filePath));
        writer .println("aString");
       writer.flush();
        writer .close();
    } catch (Exception e) {
       e.printStackTrace();
}Hope That Helps

How to write empty line in text file

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