Lesson016_11_09_19_Task1

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

public class Lesson016_11_09_19_Task1 {
    private static Scanner sc = new Scanner(System.in);

    public static void main(String[] args) throws IOException, FileNotFoundException {
        String filename = "task1.txt";
        System.out.print("Please enter a number: ");
        int num = sc.nextInt();
        sevenBoom(filename, num);
        System.out.printf("The world boom count is: " + sevenBoomCount(filename) + " times");
        notepad(filename);  //for testings
    }

    // function for task1
    public static void sevenBoom(String filename, int num) throws FileNotFoundException {
        File f = new File(filename);
        PrintWriter pw = new PrintWriter(f);
        pw.print("The 7-boom game:\n");
        String str = "";
        for (int i = 1; i <= num; i += 1) {
            str += (i % 7 == 0 || i % 10 == 7 || (i / 10) % 10 == 7) ? ("Boom!\n") : (i + "\n");
        }
        System.out.print(str);
        pw.print(str);
        pw.close();
    }

    public static int sevenBoomCount(String filename) throws FileNotFoundException {
        File file = new File(filename);
        int count = 0;
        Scanner sc1 = new Scanner(file);
        while (sc1.hasNextLine()) {
            String nextLine = sc1.nextLine();
            if (nextLine.equals("Boom!"))
                count++;
            //sc.nextLine();

        }
        sc1.close();
        return count;
    }

    // function for auto-open on Notepad++
    public static void notepad(String filename) throws IOException {
        Runtime runtime = Runtime.getRuntime();
        Process process = runtime.exec("C:\\Program Files\\Notepad++\\notepad++.exe " + filename);
    }
}