Question

Write the programs in JavaScript:
Write a program that reads a text file and outputs the text file with line numbers at the beginning of each line.

Answer 1

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.util.Scanner;

public class WriteLineNumbers {
   public static void main(String[] args){
       try {
           String line;
           int i = 1;
           BufferedWriter bw = null;
           FileWriter fw = null;
           Scanner sc = new Scanner(System.in);
           System.out.println("Enter filename: ");
           String fname=sc.next();
           sc = new Scanner(new File(fname));
           fw = new FileWriter("output.txt");
           bw = new BufferedWriter(fw);
           while (sc.hasNext()) {
               line = sc.nextLine();
               bw.write(i + " " + line + "!\n");
               i++;
           }
           bw.close();
           sc.close();
       }catch(Exception e) {e.printStackTrace();}
       System.out.println("Written Successfully....!!!");
   }
}

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