Read and modify a file

Question

Hi,
i'm very new in java programming so please don't laugh at me.
I want to read out and modify the content of a File (txt).
So please can anyone give me the code, which can do that.
I would like to do this:
if telephonnumber is in any line, then read this line.
Thank you for your support
Andy

Answer 1

Hi,
Hope this sample helps u.Have a identifier like say # or something unique before the telephone number and when u identify that,read the telephone number.
import java.io.*;
class FileTest
     public static void main(String[] args) throws Exception
          FileInputStream fin=new FileInputStream("c:\test.txt");
          BufferedReader br=new BufferedReader(new InputStreamReader(fin));
          String strLine=new String();
          StringBuffer sbBuffer=new StringBuffer();
          while ((strLine=br.readLine())!=null)
if(str.indexOf("#")!=-1)
               //read the telephone number here
}