import java.io.*;

class GrepA {
    public static void main(String[] args) throws IOException {
        String phrase = args[0];
        String filename = args[1];
        try {
            // FileNotFoundException
            FileReader fr = new FileReader(filename);
            BufferedReader br = new BufferedReader(fr);
            String line;
            while ((line = br.readLine()) != null) {
                if (line.equals(phrase))
                    System.out.println(line);
            }
        } catch (FileNotFoundException e) {
            System.out.println("File not found!");
        }
    }
}

            /*
            if (line == phrase) { // WRONG!
                 // true only if line and phrase
                // points to the same String object
                
            }
            */