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I was tasked to write a program asks the user for the name of a file. The program should display the contents of the file with each line preceded witha line number followed by a colon. The line numbering should start at 1.

I got to the point of displaying the content in the file but I am not sure how to code for the line numbers and colons. Any suggestions?


Here is what I have so far:

import java.util.Scanner; // Needed for the Scanner class
import java.io.*;         // Needed for the File class

/**
   This program reads data from a file.
*/

public class LineNumbers
{
   public static void main(String[] args) throws IOException
   {
      // Create a Scanner object for keyboard input.
      Scanner keyboard = new Scanner(System.in);

      // Get the filename.
      System.out.print("Enter the filename: ");
      String filename = keyboard.nextLine();

      // Open the file.
      File file = new File(filename);
      Scanner inputFile = new Scanner(file);

      // Read lines from the file until no more are left.
      while (inputFile.hasNext())
      {
         // Read the next name.
         String familyName = inputFile.nextLine();
         
         // Display the last name read.
         System.out.println(familyName);
         
            }

      // Close the file.
      inputFile.close();
   }
}