03. Sum Prime Non Prime

import java.util.Scanner;

public class SumPrimeNonPrime {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int primeSum = 0, nonPrimeSum = 0, number;

        String input;
        while (!(input = scanner.nextLine()).equals("stop")) {
            number = Integer.parseInt(input);
            if (number >= 0) {
                if (number % 2 == 0 || number % 3 == 0 || number % 5 == 0) {
                    if (number == 2 || number == 3 || number == 5 || number == 7) {
                        primeSum += number;
                    } else {
                        nonPrimeSum += number;
                    }
                } else {
                    primeSum += number;
                }
            } else {
                System.out.println("Number is negative.");
            }
        }

        System.out.printf("Sum of all prime numbers is: %d\n", primeSum);
        System.out.printf("Sum of all non prime numbers is: %d\n", nonPrimeSum);
    }
}