how to search for string in file

[padma patil]

Hi,
I am new to java file system.
Can anybody tell me how I can search a file to find a perticular string in it.
Do I need to fetch each string/word and check for the matching string?
Please help me out
thanks
padmashree

[Siva Prasad]

Ok here is the code I wrote for this.
this takes two arguments
1 - string to find
2 - filename

import java.io.*;
class FindString
{
    public static void main(String[] args) throws IOException
    {
    if(args.length != 2)
    {
    System.out.println("Usage: FindString <string> <filename>");
    System.exit(1);
    }
RandomAccessFile in = new RandomAccessFile(args[1],"r");
String s = null;
int i, loc = 0;
for(i=1;(s = in.readLine()) != null;i++)
{
loc = s.indexOf(args[0]);
if (loc == -1)
continue;
else
{
System.out.println(args[0]+" found in line - "+i);
System.out.println(s);
}
}
System.out.println(args[0]+" found "+--i+"no of times in the file "+args[1]);
}
}

You can have a look at indexOf methods from String class.
HtH