User Code: ReaderFile

This program searches for a word in a file and prints all lines where the word is found. I use the program to search IP-addresses or MAC-addresses in log files on Windows NT and UNIX (Solaris 8).

In line StringTokenizer st = new StringTokenizer(s,","); I use delemiter ",". If your logs fields are divided by blanks, then use " ".

ReaderFile.java
---------------------

//
// Mike Rakushin
// michail_rakushin@hotmail.com
// 11/05/2001
// This programm works under Windows NT and UNIX (Solaris 8).
//

import java.util.StringTokenizer;
import java.io.*;

class ReaderFile  {

public ReaderFile(String file1,String ip1) {

try {
	FileReader fr = new FileReader(file1);
	BufferedReader br = new BufferedReader(fr);
	String s;

//Read line and break it on tokens. Each token will compare with search
word.
	while((s = br.readLine()) != null) {
         	StringTokenizer st = new StringTokenizer(s,",");
		while (st.hasMoreTokens()) {
			String token=st.nextToken();

			if(token.equals(ip1)) {
			//Print line if find search word
			System.out.println(s);
			}

		}

	}
		System.out.println("Finished ");
		fr.close();
    }
		catch(IOException ioe) {
		System.out.println(ioe.getMessage());
		}

}
public static void main(String args[]) {
	String file;
	String ip;
	try
		{
		//Get file name
		System.out.println("Input file name:");
		BufferedReader br1 = new BufferedReader(new InputStreamReader
(System.in));
		file = br1.readLine();

		//Get search word
		System.out.println("Input search word:");
		BufferedReader br = new BufferedReader(new InputStreamReader (System.in));
		ip = br.readLine();
		ReaderFile reader=new ReaderFile(file,ip);
		}
		catch(Exception ex)
				{
					System.out.println("IOException");
				}

}
}