Find line number in text file

Question

Hi all,
I need to find the line numbers on a file where a particular string matches.
for example:
A lazy cat
A strong cat and it is black
Black is not good
So I will match for the word black and it will give the numbers say line 2 and 3 it found the match.
I am using the code:
try{
    // Open the file that is the first
    // command line parameter
      FileInputStream fstream = new FileInputStream("c:\\test.log");
    // Get the object of DataInputStream
      DataInputStream in = new DataInputStream(fstream);
      BufferedReader br = new BufferedReader(new InputStreamReader(in));
      String strLine;
     String[] arr= null;
    //Read File Line By Line
   String regex = "black";
   while ((strLine = br.readLine()) != null)   {
    // Split the sentence into strings based on space
       arr = strLine.split("\\s");
   if (arr[0].equalsIgnoreCase("black"))
      System.out.print("match found");
    Pattern p = Pattern.compile(regex);
    Matcher m = p.matcher(strLine);Thanks in advance.

Answer 1

camellia wrote:
I need to find the line numbers on a file where a particular string matches. Then declare a variable for line count. Find where you read in a line. Finally increment this variable each time a line is read.
It isn't rocket science.
Mel