Write a program that asks the user for the name of a file. The program should display the contents of the file with each line preceded with a line number followed by a colon. The line numbering should start at 1. Please edit this scanner to JOptionPane.
The problem is the following :
Write a
Please edit this scanner to JOptionPane. I don't really know how to do that.
//Java Program by Yuiri Fujita and Darrick Drewry 10/30/2020
import java.util.Scanner;
import java.io.*;
public class LineNumbers {
public static void main(String[] args) throws IOException {
// TODO Auto-generated method stub
Scanner input = new Scanner(System.in);
String userFileName;
System.out.println("Please enter the name of the file.( Enter LineNumbers.txt)");
userFileName = input.nextLine();
File file = new File( userFileName);
while( !file.exists() ){
System.out.println( userFileName + " does not exist. Please enter a different file name");
userFileName = input.nextLine();
file = new File ( userFileName);
}
Scanner fileToScan = new Scanner (file);
String line;
int counter = 0;
while (fileToScan.hasNext()){
counter += 1;
line = fileToScan.nextLine();
System.out.println(counter + ": " + line);
}
}
}
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