Find Given number is Prime Or Not

Prime number in Java: Prime number is a number that is greater than 1 and divided by 1 or itself only. In other words, prime numbers can’t be divided by other numbers than itself or 1. For example 2, 3, 5, 7, 11, 13, 17…. are the prime numbers.

class PrimeorNot
{
    public static  void main(String args[])
    {
        int findprimeornot = 8;
        int m = findprimeornot/2;
        int flag = 0;

        if(findprimeornot == 0 || findprimeornot == 1)
            System.out.println("Not a Prime Number");
        else
        {
            for(int i=2;i<=m;i++)
            {

                if(findprimeornot%i == 0)
                {
                    flag  = 1;
                    break;
                }
            }
            if(flag == 0)
                System.out.println("Is a Prime Number");
            else
                System.out.println("Is Not A Prime Number");
        }
    }
}