Java prime number ?

• A number divided by 1 and itself is called prime number.
• 0 and 1 are not prime numbers.2 is the only even prime number because all other even numbers are divided by 2.

public class primeNumber {
    public static void main(String[] args) {
    int n = 30; //To check given numer is prime or not
    int m = n / 2;
    int flag = 0;
    for (int j = 2; j < m; j++) {
        if (n % j == 0) {
            flag = 1;
            break;
        }
    }
    if (flag == 0) {
        System.out.print(n + " is a prime number");
    } else {
        System.out.print(n + " is not a prime number");
    }
  }
}

Output:

Please comment below to feedback or ask questions.