import javax.swing.JOptionPane;
import java.io.*;
import java.util.Random;
import java.util.Scanner;

public class Program_5_2
{
    //ITP_120 - 002N; LEE Program_5_2
    public static void main (String[] args)
            throws IOException
    {

        String fileName;
        int sum = 0;
        int upperRangeLimit = 100;
        int userRandomNumber;
        Random randomNumbers = new Random(100);
        boolean done = false;
        int x = 1;
        int q;
        while (!done)
        {
            fileName = JOptionPane.showInputDialog("Enter a file name or done to exit: ");

            if (!(fileName.equals("done")))
            {
                fileName = "fileName" + "_" + x++;

                Scanner keyboard = new Scanner(System.in);

                upperRangeLimit = Integer.parseInt(JOptionPane.showInputDialog("Enter the upper range limit:\\nMaximum range is 100"));
                //upperRangeLimit = keyboard.nextInt();
                userRandomNumber = Integer.parseInt(JOptionPane.showInputDialog("Enter the number of random numbers you want to generate: "));
                //userRandomNumber = keyboard.nextInt();
                q = randomNumbers.nextInt(upperRangeLimit);
                //Random randomNumbers = new Random(upperRangeLimit);
                //upperRangeLimit = JOptionPane.showInputDialog("Enter the upper range limit:\n Maximum range is 100");
                //userRandomNumber = JOptionPane.showInputDialog("Enter the number of random numbers you want to generate: ");

                  //creating the file
                File file = new File(fileName);

                  //writing the random number to the new file
                PrintWriter outputFile = new PrintWriter(fileName);
                    for (int n = 1; n < upperRangeLimit; n++)
                    {
                        sum = sum + q;
                        outputFile.println(sum);
                    }

                outputFile.close();

                Scanner inputFile = new Scanner(file);
                    //while (inputFile.hasNext())
                    //{
                    //  sum = inputFile + inputFile.nextInt();
                    //}
                System.out.println(sum);
                inputFile.close();
            }
            else
                done = true;
        }
    }
}