Assignemnt #128 Summing Several Numbers from Any File

Code

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

public class SummingSeveralNumbers 
{
    public static void main(String[] args) throws Exception 
    {
        Scanner keyboard = new Scanner(System.in);
                
        System.out.print("Which file would you like to read numbers from: ");
        String file = keyboard.next();
        System.out.println("Reading from " + file);
        System.out.println("");
                
        while (file.equals("4nums.txt") || file.equals("5nums.txt") || file.equals("6nums.txt") || file.equals("7nums.txt")) 
        {
            Scanner reader = new Scanner(new File(file));
            int total = 0;
                    
            while (reader.hasNext()) 
            {
                int a = reader.nextInt();
                System.out.print(a + " ");
                total = total + a;
            }
                
            System.out.println("Total: " + total);
            System.out.println("");
            System.out.println("Which file would you like to read numbers from next: ");
            System.out.print("> ");
            file = keyboard.next();
            System.out.println("");
        }
    }
}
    

Picture of the output