Finding line number of a word in a text file using java

Question

I require searching a word in a text file and display the line number using java. If it appears more than once I need to show all the line numbers in the output. Can anyone

Answer 1

Something like this might work:

public ArrayList find(String word, File text) throws IOException {
    LineNumberReader rdr = new LineNumberReader(new FileReader(text));
    ArrayList results = new ArrayList();
    try {
        String line = rdr.readLine();
        if (line.indexOf(word) >= 0) {
            results.add(rdr.getLineNumber());
        }
    } finally {
        rdr.close();
    }
    return results;
}