public void rollTwoDice(){
    Random randomGenerator = new Random();
    System.out.print("Desired sum: ");
    Scanner sc=new Scanner(System.in);
    int sum=sc.nextInt();
    int x = 0;
    int y = 0;
    int expected = 0;
    for (int i = 0; i < 100; i++) {
        x = randomGenerator.nextInt(6);
        y = randomGenerator.nextInt(6);
        expected = x+y;
        System.out.println(x + " and " + y + " = " + expected);
        if(expected == sum) break;
                           }
}





IS PRIme


public boolean isPrimeNumber(int n){
    if (n%2==0) return false;
    if (n == 1) return false;
    if (n == -5) return false;
    for(int i=2;i*i<=n;i++) {
        if(n%i==0)
            return false;
    }
    return true;
}