package com.psv.javaoop.lesson11.task1;

import java.io.*;

public class FileLineNumerator {

    private final String inFileName;
    private final String outFileName;

    public FileLineNumerator(String inFileName, String outFileName) {
        this.inFileName = inFileName;
        this.outFileName = outFileName;
    }

    public void runLineNumeration() {
        try (BufferedWriter writer = new BufferedWriter(new FileWriter(outFileName))) {
            BufferedReader reader = new BufferedReader(
                    new FileReader(inFileName));
            String l;
            int i = 1;
            while ((l = reader.readLine()) != null) {
                writer.write(i + ". " + l);
                writer.newLine();
                System.out.println(i + ". " + l);
                i++;
            }
            reader.close();
            writer.close();

        } catch (FileNotFoundException e) {
            System.out.println("Sorry, file is not found: " + e.getMessage());
        } catch (IOException e) {
            System.out.println("Sorry, IO error: " + e.getMessage());

        }
    }
}