import java.util.Locale; import java.util.Scanner; public class Main { public static void main(String[] args) { final String DIGITS = "\\d+"; System.out.println("Привет, сколько вас человек?"); int countPeople; Scanner sc = new Scanner(System.in).useLocale(Locale.US); while (true) { String countPeople1 = sc.nextLine(); if (countPeople1.matches(DIGITS)) { countPeople = Integer.parseInt(countPeople1); if (countPeople <= 1) { System.out.println("Недостаточно человек"); } else { //double sum = 0; Calculator calculator = new Calculator(countPeople); calculator.start(sc); calculator.result(); calculator.total(); break; } } else { System.out.println("Доступен ввод только числа"); } } } }