How can I operate txt file in Eclipse?

Hi mates,
I dnt know how I can use Eclipse to operate a file, like the sample input file. I try to set a file name in "Argument" tab and create a file in the project, but it 's not working.
CHEERS,
Elton

Thanx for reply!
here is my code,
import java.io.*;
import java.util.*;
public class ManageTestMarks {
      * @param args
     public static void main(String[] args)
          // TODO Auto-generated method stub       
        throws CloneNotSupportedException, IOException {
              Menu menu = new Menu();
              menu.fillData(args[0]); // i wanna open a file in this function;
class Menu{
    private Course course = new Course();
     public boolean fillData(String fileName) throws IOException
          BufferedReader bufr = new BufferedReader(new FileReader("fileName"));
          String inputLine;
          inputLine = bufr.readLine();
          fillFirstLine(inputLine);
          return true;
     public boolean fillFirstLine(String line)
}Regards,
Elton

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    Elton

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    import java.io.BufferedReader;
    import java.io.DataOutputStream;
    import java.io.File;
    import java.io.FileInputStream;
    import java.io.FileOutputStream;
    import java.io.FileReader;
    import java.io.FileWriter;
    import java.io.InputStream;
    import java.io.RandomAccessFile;
    import java.util.Properties;
    import java.util.ResourceBundle;
    import java.util.ArrayList;
    public class LogReader {  
        public void getValuesFromFilesOnly(String Choice,String logFileName)
              try {
                   ArrayList commentsList = new ArrayList();
                   ArrayList tempList = new ArrayList();
                   String userdir = System.getProperty("user.dir");
                   String logFilePath=ResourceBundle.getBundle("catconfig").getString("logFilePath");
                   String commentDir =ResourceBundle.getBundle("catconfig").getString(Choice);
                   String commentFilePath=ResourceBundle.getBundle("catconfig").getString("commentFilePath");
                   String currentdir1 =userdir+logFilePath+logFileName;
                   StringBuffer strBuff=new StringBuffer();
                   RandomAccessFile randomFile = null;
                   RandomAccessFile commentsFile = null;
                   String tempLine = null;
                   String commentLine = null;
                   String catVersion = null;
                   String finalReport=null;
                   int colon = 0;                    
                   int counter = 0;
                   boolean startFlag = false;
                   boolean endFlag = false;                    
                   boolean endOfFileFlag = false;          
                   System.out.println("Log file checked----->"+currentdir1);
                   System.out.println("comments file used--->"+commentDir);
                   try {
                        randomFile = new RandomAccessFile(currentdir1, "r");
                   } catch (Exception e) {
                        System.out.println("exception@getValuesFromFilesOnly@begin : "+e);
                   System.out.println("hi test1");
                   String commentDir1=userdir+commentFilePath+commentDir;
                   try{
                   System.out.println("Comment Dir:"+commentDir1);
                   commentsFile = new RandomAccessFile(commentDir1, "r");
                   catch (Exception e) {
                        System.out.println("exception@getValuesFromCommentDirOnly@begin : "+e);
                   while ((commentLine = commentsFile.readLine()) != null) {                         
                        String checkLine = commentLine.substring(commentLine.indexOf("=")+1, commentLine.length());
                        String message = commentLine.substring(0,commentLine.indexOf("="));
                        commentsList.add(checkLine);
                   commentsFile.close();
                   String startComment = (String)commentsList.get(0);
                   String endComment = (String)commentsList.get(commentsList.size()-1);
                   strBuff.append("                          CAT LOG REPORT                           \n\n");
                   while ((tempLine = randomFile.readLine()) != null) {               
                        if(tempLine.contains("CAT version is :"))
                             colon = tempLine.indexOf("is :");
                             catVersion = tempLine.substring(colon+4,tempLine.length());
                             String version=tempLine;
                             strBuff.append("Version : "+catVersion+"\n");
                             System.out.println("catVersion is :"+catVersion);
                        commentsFile = new RandomAccessFile(commentDir1, "r");
                        while ((commentLine = commentsFile.readLine()) != null) {
                             String checkLine = commentLine.substring(commentLine.indexOf("=")+1, commentLine.length());
                             String message = commentLine.substring(0,commentLine.indexOf("="));
                             checkLine=checkLine.toLowerCase();
                             tempLine=tempLine.toLowerCase();
                             if(tempLine.contains(checkLine))
                                  colon = tempLine.indexOf("info -");
                                  catVersion = tempLine.substring(colon+7,tempLine.length());
                                  strBuff.append(message+" ==> "+catVersion+"\n");
                                  System.out.println(message+" ==> "+catVersion);
                                  tempList.add(message+" ==> "+catVersion);
                                  if (catVersion.contains(startComment)){
                                       startFlag = true;
                                       counter++;
                                       System.out.println("*******startFlag**********"+startFlag);
                                  if (catVersion.contains(endComment)){
                                       endFlag = true;
                                       System.out.println("*******endFlag**********"+endFlag);
                                  if (startFlag == true && endFlag == true){
                                       System.out.println("******************************************");
                                       System.out.println("-------------Successfull completion-------");
                                       System.out.println("******************************************");
                                       startFlag = false;
                                       endFlag = false;
                                       counter = 0;
                                       tempList.clear();
                                  if (startFlag == true && endFlag == false && counter > 1){
                                       System.out.println("******************************************");
                                       System.out.println("---------------Failure after-----:"+tempList.get(tempList.size()-1));
                                       System.out.println("******************************************");
                                       //startFlag = false;
                                       //endFlag = false;
                                       counter = 0;
                                       tempList.clear();
                        commentsFile.close();
                   endOfFileFlag = true;
                   if (startFlag == true && endFlag == false && endOfFileFlag == true){
                        System.out.println("******************************************");
                        System.out.println("---------------Failure after-----:"+tempList.get(tempList.size()-1));
                        System.out.println("******************************************");
                        startFlag = false;
                        endFlag = false;
                        counter = 0;
                        tempList.clear();
                   randomFile.close();
                 System.out.println("hi");
                   finalReport=ResourceBundle.getBundle("catconfig").getString("finalReport");
                   savereportFile(strBuff,finalReport);
                   System.out.println("Report Generated");
              } catch (Exception e){
                   System.out.println("Exception@getValuesFromFilesOnly : "+e);
        public void findDetails()
             String currentdir1 = ResourceBundle.getBundle("catconfig").getString("fileName");     
             String logFilePath=ResourceBundle.getBundle("catconfig").getString("logFilePath");
             String userdir = System.getProperty("user.dir");
             RandomAccessFile randomFile = null;
             StringBuffer strBuff=new StringBuffer();
             StringBuffer strBuff1=new StringBuffer();
             StringBuffer strBuff2=new StringBuffer();
             String tempLine = null;     
              String catVersion = null;
              String timeStr=null;
              String nameStr=null;
              String startIP="";
              String endIP="";
              String tempStart="";
              String tempEnd="";
              String reportFileName="";
              String moduleFileName="";
              String propFileName="";
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              int endPos=0;
              int fromIndex=0;
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              boolean ndFlag=false;
              boolean ddFlag=false;
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                             ndFlag=true;
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                             catVersion = tempLine.substring(startPos+5,tempLine.length());
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                             startPos = tempLine.indexOf("end_IpAddress");
                             catVersion = tempLine.substring(startPos+13,tempLine.length());
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                                  System.out.println("hi5");
                                  strBuff.append("DDSingleIP : "+startIP+"\n");
                                  //strBuff.append("DDSingleIP : "+tempLine+"\n");                              
                                  //System.out.println("DDSingleIP : "+startIP);
                                  //startPos = tempLine.indexOf(" ");
                                  startPos=0;
                                  fromIndex=tempLine.indexOf(":");
                                  endPos= tempLine.indexOf(':', fromIndex+2);
                                  timeStr=tempLine.substring(startPos, endPos);     
                                  strBuff2.append("DD_"+timeStr+" "+startIP+" = "+"DDSingleIP_"+startIP+".log\n");
                             else
                                  strBuff.append("DDRangeIP : "+startIP + " to "+ endIP+"\n");
                                  //strBuff.append("DDRangeIP : "+tempLine+"\n");                              
                                  //System.out.println("DDRangeIP : "+startIP + " to "+ endIP);
                                  //startPos = tempLine.indexOf(" ");
                                  startPos=0;
                                  fromIndex=tempLine.indexOf(":");
                                  endPos= tempLine.indexOf(':', fromIndex+2);
                                  timeStr=tempLine.substring(startPos, endPos);                         
                                  strBuff2.append("DD_"+timeStr+" "+startIP+" to "+endIP+" = "+"DDRangeIP_"+startIP +"_to_"+ endIP+".log\n");
                        if(tempLine.contains("set percentage completedCount: 100"))
                             System.out.println("hi...1");
                             strBuff.append("DD End : "+tempLine+"\n");
                             //System.out.println("DD End : "+tempLine);          
                   reportFileName=ResourceBundle.getBundle("catconfig").getString("reportFileName");
                   savereportFile(strBuff,reportFileName);
                   if(ndFlag)
                        strBuff1.append("Network Discovery\n");                    
                   if(ddFlag)
                        strBuff1.append("Device Discovery\n");
                   moduleFileName=ResourceBundle.getBundle("catconfig").getString("moduleFileName");
                   savereportFile(strBuff1,moduleFileName);
                   propFileName=ResourceBundle.getBundle("catconfig").getString("propFileName");
                   savereportFile(strBuff2,propFileName);
              } catch (Exception e)
                   System.out.println("error hi1");
                   System.out.println("Exception@findDetails : "+e);
        public void savereportFile(StringBuffer strBuff,String targetFileName)
              try{
                   String userdir = System.getProperty("user.dir");
                   String logFilePath=ResourceBundle.getBundle("catconfig").getString("logFilePath");
                   String reportFile=userdir+logFilePath+targetFileName;     
                   String fileContent="";
                   fileContent=strBuff.toString();
                      //System.out.println("file content : "+fileContent);
                      FileWriter fileWriter = new FileWriter(reportFile);
                      if(fileContent!=null)
                           fileWriter.write(fileContent);
                      fileWriter.close();
              catch(Exception e)
                   System.out.println("error hi1");
                   System.out.println("Exception@savereportFile : "+e);
        public ArrayList<String> getFileNames()
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             String logFilePath=ResourceBundle.getBundle("catconfig").getString("logFilePath");
             String userdir = System.getProperty("user.dir");
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              String reportLine = null;
              int colon=0;
              int fromIndex=0;     
              int startPos=0;
              int endPos=0;
              String timeStr="";
              String fileName=null;          
              ArrayList<String> nameList=new ArrayList<String>();          
             try
                  reportFile=userdir+logFilePath+reportFile;
                  repFile = new RandomAccessFile(reportFile, "r");
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                  repFile.close();
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                   System.out.println("Error@getFileNames : "+e);
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                   String line = null;
                   String userdir = System.getProperty("user.dir");
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                   String newLogPath=ResourceBundle.getBundle("catconfig").getString("logFilePath");
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                   String reportLine = null;
                   String tempLine=null;
                   String prevLine=null;
                   String nextLine=null;
                   String target=null;
                   String tempStr=null;
                   String startStr=null;
                   String endStr=null;          
                   int pos=0;
                   boolean flag=false;
                   boolean writeFlag=false;
                   boolean versionFlag=false;               
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                   startStr=tempStr.substring(0,pos);
                   endStr=tempStr.substring(pos+1, tempStr.length());
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                            flag=true; 
                            prevLine=tempLine;
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                                 nextLine=reportLine;
                                 flag=false;
                                 //System.out.println("nextLine *******:"+nextLine);
                                 break;
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                       pos=prevLine.lastIndexOf(" : ");
                       prevLine=prevLine.substring(pos+3, prevLine.length());
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                  else
                       System.out.println("Starting line not available for : "+target);
                  if(nextLine!=null && nextLine.length()>0)
                        pos=nextLine.lastIndexOf(" : ");
                        nextLine=nextLine.substring(pos+3, nextLine.length());
                        //System.out.println("nextLine : "+nextLine);
                  else
                       System.out.println("Ending line not available for : "+target);
                       nextLine=prevLine;
                   while ((line=buffRead.readLine()) != null) {     
                        if(line.contains("CAT version is :") && !versionFlag)
                             versionFlag=true;
                             dout.writeBytes(line+"\n");                         
                        if(line.contains(prevLine))
                             writeFlag=true;                         
                        if(line.contains(nextLine))
                             writeFlag=false;
                             break;
                        if(writeFlag)
                             dout.writeBytes(line+"\n");
                  dout.writeBytes(nextLine+"\n");
                   buffRead.close();     
                   System.out.println("done");
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                   System.out.println("Exception@writeFile : "+e.getMessage());
        public String folderCheck(String foldName)
              File folder=null;
              File newFile=null;
              String[] folderContent=null;
              String tempFileName="";
              String newLogName="";
              int count=0;     
              String logFilePath="";     
              String fileName="";
              String feedBackMsg="";          
              String userdir = System.getProperty("user.dir");
              logFilePath=ResourceBundle.getBundle("catconfig").getString("logFilePath");
              fileName=ResourceBundle.getBundle("catconfig").getString("fileName");
              folder=new File(foldName);
              if(folder.isDirectory())
                   newLogName=userdir+logFilePath+fileName;
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                   newFile=new File(newLogName);
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                        System.out.println("folder has files : "+folderContent.length);                    
                        for(int iterate=0;iterate < folderContent.length;iterate++){                         
                             if (folderContent[iterate].toLowerCase().contains("system"))
                                  count++;                              
                                  tempFileName=foldName+"/"+folderContent[iterate];     
                                  try
                                       FileOutputStream appendedFile=null;
                                       BufferedReader buffRead = new BufferedReader(new FileReader(tempFileName));
                                       appendedFile = new FileOutputStream(newLogName, true);//true-for append mode
                                        DataOutputStream dout=new DataOutputStream(appendedFile);
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                                       System.out.println("writting : "+tempFileName);
                                       while ((line=buffRead.readLine()) != null) {                                        
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                                       buffRead.close();          
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                             feedBackMsg="syslogavail";
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             String propFileName="";
             String line="";
             String choice="";
             String tempStr="";
             int startPos=0;
             int endPos=0;
             ArrayList<String> timeList=new ArrayList<String>();
             String userdir = System.getProperty("user.dir");
             try
                  logFilePath=ResourceBundle.getBundle("catconfig").getString("logFilePath");
                  propFileName=ResourceBundle.getBundle("catconfig").getString("propFileName");
                  propFileName=userdir+logFilePath+propFileName;
                  BufferedReader buffRead = new BufferedReader(new FileReader(propFileName));
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                       choice="DD";
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