import java.io.File;
import java.io.IOException;
import java.util.Scanner;

public class FileReadSimple {

        public static void main(String[] args) {

                Scanner keyboard = new Scanner(System.in);
                
                System.out.print("Enter a filename: ");
                String filename = keyboard.nextLine();
                File file = new File(filename);
                
                try (Scanner fileIn = new Scanner(file)){
                        int l = 0;
                        while(fileIn.hasNextLine()) {
                                String line = fileIn.nextLine();
                                System.out.printf("%4d: %s\n", l, line);
                                l++;
                        }
                }
                catch(IOException ioe) {
                        ioe.printStackTrace();
                }
                
                keyboard.close();
        }


}