ABC problem done in JAVA

import java.util.Scanner;

/**
 *
 * @author JARVIS-MAIN
 */
public class AbcIsWhat {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        Scanner scan = new Scanner (System.in);
        double a = 0, b = 0, c = 0, count = 1;

        System.out.println("Do you to stop the program if you reach an ");
        System.out.println("answere to the ABC problem? (enter yes or no)");
        String ans = scan.nextLine();

        for (int a1 = 1; a1 <= 9; a1++) {
            a = (double) a1;
            for (int b1 = 1; b1 <= 9; b1++) {
                b = (double) b1;
                for (int c1 = 1; c1 <= 9; c1++) {
                    c = (double) c1;
                    System.out.println("======[" + count + "]=====");
                    System.out.println("a: " + a);
                    System.out.println("b: " + b);
                    System.out.println("c: " + c);

                    double part1 = joinNumber(a,b,c) / 5;
                    double part2 = (a * b * c);
                    System.out.println("part 1: " + part1);
                    System.out.println("part 2: " + part2);
                    if (part1 == part2) {
                        System.out.println("======[EQUAL]=====");
                        System.out.println("part 1: " + part1);
                        System.out.println("part 2: " + part2);
                        if(ans.equalsIgnoreCase("yes")){
                            System.exit(0);
                        }
                    }
                    count++;
                }
            }
        }
    }

    public static double joinNumber(double a, double b, double c) {
        double send = (100 * a) + (10 * b) + (1 * c);
        return send;
    }