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How to Delete line in text file

I m storing ph.nos in text file line by line. I want to delete one phone no from the file.
I m using FileWriter and BufferedWriter.

plz, write any way to delete line.
0
macha060500
Asked:
macha060500
1 Solution
 
sateesh_babuCommented:
Procedure is
Open a new file, and the current file.

Scan the current file line by line,
Loop
  if ( currentLine == ReqPhoneNumber)
  {
      Do not copy the line to the new file
  }
  else
  {
      Copy the line to the new file.
  }
End loop;

delete the old file.
Rename the new file to the old file name.
Close all the file handles.

Hope this helps!!!
Babu
0
 
psvinayramCommented:
Also synchronize the method if more than one program or user is accessing the same file
0
 
vasan_srCommented:
hi
 i hope this code will sort u r problem...
goodluck

import java.io.*;
import java.lang.*;

public class Test1 {
String thisLine;
int line;

     public void readFile(){
          try {
     PrintWriter pw=new PrintWriter(new FileOutputStream("output.txt"));
     StringBuffer sb=new StringBuffer("");
       FileInputStream fin =  new FileInputStream("input.txt");
        BufferedReader myInput = new BufferedReader(new InputStreamReader(fin));
             int cnt=1;
     while ((thisLine = myInput.readLine()) != null) {  
                if(!thisLine.equals(yourLine)){
       char[] c=thisLine.toCharArray();    
           for(int i=0;i<c.length;i++){
               sb.append(c[i]);
           }
          }
          }

       pw.println(sb.toString());
     pw.close();
       }catch (Exception e) {
                    e.printStackTrace();
               }
     }    
   

     public static void main(String args[])
     {
           Test1 t=new Test1();
           t.readFile();

          }
}
0
 
vemulCommented:
No comment has been added lately, so it's time to clean up this TA.
I will leave a recommendation in the Cleanup topic area that this question is:

- points to vasan_sr

Please leave any comments here within the
next seven days.

PLEASE DO NOT ACCEPT THIS COMMENT AS AN ANSWER !

vemul
Cleanup Volunteer
0
 
SpideyModCommented:
per recommendation

SpideyMod
Community Support Moderator @Experts Exchange
0

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