Thread: I except show this FIRST - JAVA

Hello,

Could you please run this?
I except show "Enter N:" but the program waiting to receive the number.

 
import java.util.Scanner;
 
public class NewMain {
 
    public static  boolean isPrime(int n)
    {
        boolean flag = true;
        for(int i = 2 ; i < n ; i++)
        {
            if (n %i == 0)
            {
                flag = false;
                break;
            }
        }
        return flag;
    }
 
    public static void Range(int a , int b)
    {
        for (int i = a ; i <=b ; i++)
        {
               if (!isPrime(i))
        {
            System.out.printf("\n%d is NOT Prime!",i);
        }
        else
        {
              System.out.printf("\n%d is Prime!",i);
        }
        }
    }
 
    public static void main(String[] args)
    {
        Scanner scan = new Scanner(System.in);
        System.out.printf("Enter N: "); // I except show this FIRST
 
        int n = scan.nextInt(); // But this run FIRST!
        boolean flag = isPrime(n);
             if (!flag)
        {
            System.out.printf("\n%d is NOT Prime!",n);
        }
        else
        {
              System.out.printf("\n%d is Prime!",n);
        }
          System.out.printf("Enter A: ");
          int a = scan.nextInt();
          System.out.printf("Enter B: ");
          int b = scan.nextInt();
          Range(a,b);
    }
 
}

Thanks, but this is for me:

10
Enter N:
20
30
10 is NOT Prime!Enter A: Enter B:
20 is NOT Prime!
21 is NOT Prime!
22 is NOT Prime!
23 is Prime!
24 is NOT Prime!
25 is NOT Prime!
26 is NOT Prime!
27 is NOT Prime!
28 is NOT Prime!
29 is Prime!
30 is NOT Prime!

Win 10 and netbeans 13 (output window)

Try to add

System.out.flush();

after System.out.printf