Prime no

class Main {
    public static void main(String[] args) {
        isPrimeNum(24);
        
    }
    
    public static void isPrimeNum(int num) {
            
        
        boolean flag = false ;
        int i = 2 ;
        
        while (i <= num-1 ) {
        if(num % i == 0){
            System.out.println("It is not a prime no");
             flag =true;
            break;
        }
        else {
        i++;
        }
           
            
            }
            
             if(flag == false) {
                
                System.out.println("It is a prime no");
            }
}

}